Источник:
http://www.agermark.com/2017/08/pack...e-upgrade.html
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If you get an error like "There is a problem with package 'ContactPerson'. Either the source version being upgraded from is incorrectly identified, or the target version has a package with the same name as a custom package." and you don't have a custom package of the same name, the solution could be the following.
In your existing source (Main branch) you should remove dependencies to the failing models from you model definitions. Check in the change and start the upgrade tool again.
When the upgrade tool is finished you should roll back your change in Main, to keep that branch working.
Источник:
http://www.agermark.com/2017/08/pack...e-upgrade.html