Has anyone seen this before?
Did a DB content upgrade from SharePoint 2007 to 2010. After the content upgrade (with only a warning saying that an unknown 3rd party web part was missing), we reviewed the new site, and found MANY pages which contained Summary Links web parts suddenly
had many (but not ALL) of the Summary Links web parts now marked as closed. At first we thought the parts were missing from the page, but when we edit the page we see the parts are in the Closed gallery. We can add the part back in from the Closed
gallery and all it's originally set properties are there. Why are they coming up as Closed after the upgrade when they weren't Closed BEFORE the upgrade?
We have quite a few pages that contain one or more Summary Links web parts. On SOME of the pages, one or more of these web parts are now Closed. However, not ALL of the pages that contain these parts have the parts closed, and on the pages that
now have these closed parts, not ALL of the Summary Links parts on that page are Closed, so it is not a problem with an unregistered Summary Links web part as the part is working on the same and other pages (I found other people on the web mentioning issues
where NONE of their Summary Links parts are working after an upgrade.) So, it seems to be somewhat random as to which instance
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