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Given the Architecture differences I don't see how that would be possible.
When we upgrade oracle from 220.127.116.11 to 18.104.22.168, We have to run catalog script and so on.
So simply, I think You cannot restore 22.214.171.124 database to 126.96.36.199 .
I think You cannot restore 188.8.131.52 database to 184.108.40.206 .You can. See MOS Doc.ID 790559.1 - RMAN Restore of Backups as Part of a Database Upgrade
Said that I've never tried to restore an Enterprise or Standard edition to a XE one, I think the problem here is not the version, but the edition, due to XE limitations.