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That's going to be a pain! We held off 1912, as we have so many 7.15 sites with various CUs, so was planning to jump from 7.15 to 2203, but looks like we can't unless we move all sites to the latest CUs.

Yeah, we did the CU->1912 jump the last time around, and then found out that we didn't need to, and it wasn't fun. Nobody likes dragging out upgrades.