Using Web Analysis Dashboards from Hyp V9.3 to import into Hyperion V11 when upgrading to Hyp V11

We are currently in the process of upgrading from Hyperion V9.3 to Hyperion V11.  With this upgrade we have removed 3 dimensions and added 1 new dimension.  In addition, our account and entity dimensions are also changing.  We were able to export V9 FR studio reports and import them to V11 FR studio to use as a starting point, edit them and make changes to the accounts, entities, new dimensions, save and execute.

I'm wondering if anyone has done the same for their reports in web analysis studio.  I exported a V9 web analysis report, opened it in notepad ++ to change the URL, IP address, removed the old dimensions and then imported to V11 web analysis studio hoping I could edit the report to add the new dimension and change the accounts and entities to the correct ones in V11.  I'm getting an error when editing that I not all dimensions are represented.  Do I have to edit the exported V9 file to remove old dimension, add new ones first before importing?  If