Upgraded Pulse from 5.5.1 to 5.7.3 on Dev. Then upgraded UAT.
After upgrade on both environments, Dev to UAT migration failed with following error.
ERROR 20/03/2018 14:23 Unable to run import process The process failed: NSW, 2750
(This is a Location dim in TM1)
Also, all the previous Migration Packages are gone in UAT. Previous Migration Packages do exist in Dev.
Update documentation feature works fine in both environments.