Support MCVSID in FTP Data Sources Upload

[#1]

Because this sounds obvious, and would allow us to sequence user behaviour across different channels.

Sounds like it's what appeared in the "Experience Analytics" sneak at the Summit this year.

[#2]

Experience Analytics Sneak was piece of shit . This has been done for years. This is required for a quick availability of segmented Audience based upon our offline data to our delivery systems like Target , Push notification etc.

[#3]

When you say done for years, do you mean in Data Workbench?