What's the best strategy for upgrading PMO from 4.3 to 4.4 and converting from PMO/XSYS to PMO/XCF?
A good Best Practice would be to leave each system on XSYS ONLY until all have been upgraded from 4.3 to 4.4. After all systems have been used for some time (maybe through a monthly maintenance window), then all should be converted to XCF simultaneously.
Simultaneous conversion to XCF is not required, but all systems should be done as close together as possible.
The advantages of doing the release upgrade and the XSYS upgrade separately are that: