Press the 'Transfer Trees' button of the 'ARB_MERGE' window to display the 'MERGE TREES' window.
Select source tree from the left tree-list and the destination from the right tree-list.
Choose whether to
transfer the selected tree only or
transfer all, existing or missing trees
Press the 'Transfer' button below the 'Tree' subwindows.
To delete or rename trees in the individual databases press the corresponding buttons below the 'Tree' lists.
If you check 'Overwrite trees?', existing trees in the destination database will be overwritten.
Existing trees will be overwritten without changing their position. New trees will be inserted behind the tree selected in the right tree-list.