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If you once worked with Label Manager items with local settings in your project and you want to switch back it's not only possible to migrate maintain the items to selected that also exist in the global settings. So you can choose if you want to stay with your local settings or deselect all items from your issues for that particular Label Manager custom fieldTo do this, select ‘Maintain’ while switching from project specific to global settings.
The reason for deselecting or migrating the items is that Label Manager custom fields do only allow items assigned to your issues which are defined in your settings.
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