jcr:lastmodified property of jcr:content is taking current time for DAM assets while DAM package installation

[Anoop_Garg]

We are upgrading from CQ5.5 to AEM 6.1, When we are uploading any DAM package then its overriding jcr:lastmodified property value with current time for jcr:content node of that asset. Which was not previously happening in CQ5.5. We have some functional dependency on this value. Can some one suggest how can I stop this overriding. Launcher can be the solution I believe. but unfortunately its not working for me. If someone have faced issue like this or fixed using launcher , Please suggest.

[smacdonald2008]

I am investigating this with internal Adobe ppl. 

[Opkar_Gill]

How are you upgrading? Using an inplace upgrade?

Regards,

Opkar

[Anoop_Garg]

No Opkar.

[Anoop_Garg]

Issue is fixed now. It's working now after disabling DAM update Asset Workflow.