Railings and stairs would have been deleted when you saved back to 20 as those tools don't exist in 20 and can't be replicated - so they just get deleted.
I doubt it was anything to do with them.
Sounds like it was just a glitch that got reset when saving back.
I still have no idea what it could have been.
Barry.
One of the forum moderators.
Versions 6.5 to 27
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