They will be put on the gumroad page, which should (hopefully) send you an email that there’s a new version available.
You can try loading it with verbose debug turned on (which might not give as much info as necessary, because if it’s a hard crash, UE might not flush the log file to disk before it goes down), or you can toss it my way and I can take a look at it
Sadly, this would be… hard to do right, given how the data is stored.
I could maybe rig up something (if this vague idea I just had pans out, maybe), but as soon as you rotate the group, all bets would be off.