Hey Marketo Community!I have a few questions about Marketo instance migrations, specifically around what does and does not carry over after a configuration copy. Email Links and Asset References - Which email links or asset references, if any, may break and require manual updates after the configuration copy? Specifically, I’m asking about emails: Referencing assets via Design Studio / image picker Using manually pasted links Using program tokens containing links Landing Page URLs - For active landing pages, do existing URLs carry over to the new instance? My understanding is that they would if the domains remain the same, but I’d appreciate confirmation. Historical Data - Does historical data carry over, or is it cleared by default? Adobe’s scope appears to include only: Cookie migration Person record migration for Marketo-only records Program and static list membership migration 90 days of email activity migration Any insights are appreciated. Thank you!

Great clarification from @SanfordWhitemanon the cookies, that would indeed work!However, I would like to add some generic comments:Your activity history is generally NOT migrated across in an instance copy. If there is important activity data you do want to keep, it is possible to bulk extract that from the old instance and link it in the new one as a custom activity.In terms of landing page urls: Your branded subdomain can only point to one Marketo instance at a time. So the default answer is that your landing page urls will change. It is however possible to implement a transition process with a temporary branded subdomain that allows you to carry across the old subdomain and re-use it in the new one.Tokens that contain links would be hard coded urls, so if they are references to your Marketo landing pages the answer depends on the previous point.Links to assets inside your instance would also depend. If you have selected the image itself, the link should keep working. If you have added it to your asset with its url, then the answer again depends on whether you decide to migrate your landing page domain or start with a new one.Do note that in the migration strategy for moving your old landing page domain to the new instance, there will be some temporary disruptions as the changes take effect.

lchu

Level 2

Question

Marketo Instance Migration Questions

Forum|Forum|3 days ago
May 4, 2026
4 replies
65 views

Hey Marketo Community!

I have a few questions about Marketo instance migrations, specifically around what does and does not carry over after a configuration copy.

Email Links and Asset References - Which email links or asset references, if any, may break and require manual updates after the configuration copy?

Specifically, I’m asking about emails:
- Referencing assets via Design Studio / image picker
- Using manually pasted links
- Using program tokens containing links
Landing Page URLs - For active landing pages, do existing URLs carry over to the new instance?
My understanding is that they would if the domains remain the same, but I’d appreciate confirmation.
Historical Data - Does historical data carry over, or is it cleared by default?

Adobe’s scope appears to include only:
- Cookie migration
- Person record migration for Marketo-only records
- Program and static list membership migration
- 90 days of email activity migration

Any insights are appreciated. Thank you!

Ruchi_Lapran1

Adobe Champion

Hi,

You can use the below as guide during config copy or manual migration. Also here is a user group chapter that would help you strategise your migration journey https://mugs.marketo.com/events/details/marketo-melbourne-marketo-user-group-presents-melbourne-mug-april-2024/

M

mshumaker

Level 1

Hi @Ruchi_Lapran1

Thank you for this, but we already have these documents related to the configuration copy and are hoping for more detailed info.

Although it says landing pages and assets are copied over, I am unclear on whether the URLs/links for these remain the same or if they change and will require manual updates? Also, if a token contains an asset link or URL, do those links carry over after the copy or do they also need to be manually updated?

And for the historical data, just need someone to confirm if anything is copied over. I see on their list what is not.

M

mshumaker

Level 1

Thanks @Ruchi_Lapran1 we have this information but am hoping for specific answers. Although images and landing pages copy over, do the URLs and links change (which would require manual updates after the copy.) And if these links are inside tokens, do they carry over?

Arun_Sharma9

Level 3

Hi @mshumaker,

You’ve to make updates to the images urls, as per my understanding below will happen, if you’re migrating from one Marketo instance to another Marketo Instance

You’ll surely have a new Landing page domain and a new munchkin
Images url in Marketo start from your landing page domain and then it has your munchkin code also in the url
Which means you’ve to manually or programmatically change the urls of the images in all of your live assets
1. Old emails - you can ignore, as you can’t do anything
2. New emails - yes you’ve to
3. New landing pages - yes you’ve to
4. Tokens - you’ve to

@lchu

You’ve to make updates to the urls
Landing page urls - you can’t have same domain migrate over easily during the migration process as you can’t have same domain mapped to two different Marketo CNAME
Historical Data - all tracking data and cookie will be lost after the migration as everything is connected to Munchkin cookie and as you’ll be getting new Munchin code

Thanks,

Arun Sharma

SanfordWhiteman

Level 10

Historical Data - all tracking data and cookie will be lost after the migration as everything is connected to Munchkin cookie and as you’ll be getting new Munchin code

Nope, this part isn’t actually true. It’s pretty trivial to get users to maintain associated sessions seamlessly after migration.

It’s better to think about the token part of the cookie value than the whole cookie value. Marketo will not generate a new token when you switch Munchkin IDs. You keep the same one.*

Maintaining the association is as simple as exporting the cookies field from one instance and then calling the associateLead API in the other instance.

* In fact, even if you got a different token by default, this would still be possible w/custom JS.

Katja_Keesom

Community Advisor and Adobe Champion

Great clarification from @SanfordWhiteman on the cookies, that would indeed work!

However, I would like to add some generic comments:

Your activity history is generally NOT migrated across in an instance copy. If there is important activity data you do want to keep, it is possible to bulk extract that from the old instance and link it in the new one as a custom activity.
In terms of landing page urls: Your branded subdomain can only point to one Marketo instance at a time. So the default answer is that your landing page urls will change. It is however possible to implement a transition process with a temporary branded subdomain that allows you to carry across the old subdomain and re-use it in the new one.
Tokens that contain links would be hard coded urls, so if they are references to your Marketo landing pages the answer depends on the previous point.
Links to assets inside your instance would also depend. If you have selected the image itself, the link should keep working. If you have added it to your asset with its url, then the answer again depends on whether you decide to migrate your landing page domain or start with a new one.

Do note that in the migration strategy for moving your old landing page domain to the new instance, there will be some temporary disruptions as the changes take effect.

lchuAuthor

Level 2

Thanks everyone for the quick responses! Really appreciate all the feedback we’ve gotten.

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