V5R4M5 to V5R4M0 backwards compatability issues

[JonathanFuller]

Our shop is currently running OS/400 V5R4M0. Our Disater recovery people (IBM) want to give us a box at V5R4M5 for our upcoming DR test run. Before we okay this I am trying to determine if we should/could/would expect any issues trying to run our V5R4M0 tested and proved applications on the higher mod level.

Thanks in advance,
Jonathan

[efnkay]

Going upwards in just the mod level from V5R4M0 to M5 shouldn't cause you any concerns about running your M0 created applications. You could check the What's New in this Release for M5 but
rarely is anything from a prior release, let alone just a prior mod level, obsoleted in the higher mod level. You'll probably have to populate the new machine and restore your application objects on the new machine at *V5R4M0 previous release. Good Luck!