I say, make a backup of what you have now, re-save it in 1.4.27 and see if it's survived, if not, try again when 1.5 is out of beta...
Yeah I would assume if it doenst work now, that it would at least work with the new version when it's out of beta, and the CK is updated. That should fix it. Which is fine. My project is months away from release, so at worse my testers cant play it.
Though, would I already know if it was corrupted? I've play tested it several times, and I continue being able to work without any issues at all. Maybe it's because I don't touch any of the game settings, so it isnt affected?
EDIT: Well I can keep working and loading it ingame no issues... Also, I opted out of beta and saved again and it all seems to work. (I cant actually load into the game, but thats because I didn't make my mod an esm)
I'm going to opt back in and keep working and I guess just risk it. :/