Hi Anthony, I'm the System Admin on this one. The user was in Classic until this happened. We did try switching him to the new experience, but it did not help. Maybe there were some background refreshes of some sort that have yet to take? I'll have him try it again this week. And we will take a look...
Anthony, when you say "we decided to build our own" do you mean that you worked out a way of exporting from Workfront into a gantt for in excel? or do you mean that you build out the Gantt post export in Excel? We have been creating milestone documents this way (exporting, and then creating the Gant...