Upgrade from 7.5.13 to 8.4.4. Lost all Thumbnails and Meta Keywords

I just upgraded my test site from 7.5.13 to 8.4.4 and I now have to go through every page and re-do all my Attributes. First round my NAV showed ALL pages, fixing this was quick and easy. But now I've notice that it dropped all my loaded page Thumbnails and all my Meta Keywords. Not sure if there is anything else that I've lost yet.

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TooqInc replied on at Permalink Reply
Check your C5 log files. Likely some exceptions kicking around that will provide some insight into the issue. We saw some class names get kiboshed with the latest update.