So if you have RM 9, why are you changing to RM 8?–Just curious…
Limitations-- the guys can probably tell you a lot more but in my opinion, RM9 and RM8 are very similar except RM 9 has added features…
Since Rootsmagic upgraded to RM9, there will be no more updates to RM 8 but I am sure that you could probably still use it for many years…
You can’t take a file that has been opened in RM 9 and open it in RM 8 BUT you can make a gedcom of your RM 9 file and import it into RM 8 ( or RM 7).
note @TomH ( and others ) have said there can be a loss of info when importing by gedcom-- I’ve never experienced it BUT here is a site from Tom
For a comprehensive list of GEDCOM losses:
https://sqlitetoolsforrootsmagic.com/gedcom-dnd-transfer-losses/
These are the files than can be imported in RM 8
