I was referring to note 5521 under UM Core IMT fields discussing the versions of SDW/SDU that can be used for snapshot style UM backups (its own database/perf data) and the DR feature that can be used to mirror the UM data.
I expect that the SnapDrive IMT records will state UM Core compatibility and after checking I observed that SDU lists UM 5.2 compatibility whereas SDW only shows UM 5.1.
I am investigating the status of the SDW IMT records.
Compatibility does indeed matter - if you do not see a particular combination of versions listed within IMT you can assume it was not tested to work.
Re: Changing DFM Installation Path Before Upgrading