Now reads:

"If accepted, an OpenDocument 1.2-incompatible feature should be cast into an equivalent but OpenDocument 1.2-compatible form. See Appendix H, Changes From Previous Specification Versions (Non-Normative), as well as previous specifications and any approved errata for them."

I don't look forward to correcting this one but that is way too vague. "...cast into an equivalent but OpenDocument 1.2-compatible form." ???

Without saying what that equivalent form might be?