_2 folders in team-server projects

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What is the goal of the local folder with '_ 2' extension which seems to be created when opening a 3.0 team-server project? For example: 'projectname-main_2'. Can they be deleted?
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1 answers
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Edit: I was wrong and this is actually a bug. You can safely delete these empty folders, there's a ticket being made at the moment so this will be solved in the future.

answered