We use server side integration between CRM Online and SharePoint Online. The SharePoint document libraries/lists have a boolean custom column 'Curriculum Vitae' which we display in CRM using this 'trick' described by Jason Lattimer: http://ledgeviewpartners.com/blog/quick-tip-add-custom-columns-sharepoint-list/
This worked fine for more than a year, but recently we end-up with empty columns in CRM. What could be causing this?

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