[FSLogix & Citrix] How to save the profile data of account2 that was startet within my account1?

Solution:
On the target device using a GPO i had to remove the local user profile account2 (which is an administrator account) from  Computer Management -> System Tools -> Local Users and Groups -> Groups -> FSLogix Profile Exclude List and instead add account2 into the local Computer Management -> System Tools -> Local Users and Groups -> Groups -> FSLogix Profile Include List.

Link: https://learn.microsoft.com/en-us/fslogix/concepts-include-exclude-groups