Ungroup, Dissolve and Delete Groups
Releases layers from a group, or a group from another group (Win+Mac: Shift+H).
Left: Layers in Sub-Group at the End of a higher Group; Center: Layers moved down and now appear two Levels upwards; Right: Layers moved using 'Ungroup Layers' and now appear one Level upwards
All selected layers or groups will be ungrouped and moved below the group they were contained in. This is especially useful when the containing group is right at the bottom of another group. If you would move the layers below by yourself and then execute Refresh Layout, the layers would then be shifted two levels upwards instead of one. In these circumstances, use Ungroup instead to only move them one level upwards.
Dissolves a group (Win: Ctrl+Shift+FwdDel, Mac: no default shortcut).
Select either the group header or a layer contained in the group and then execute Dissolve Group. It will remove the group but will not delete all contained layers, as Delete Layer / Clone / Group would. It will release the layers one level upwards, either to a higher group or move them out of groups completely.