Thread:Horoshi/@comment-28460949-20170621212313/@comment-30886488-20170622123334

1) You need to open the first base.

2) Open the second base (It will open in new tab.)

3) Select it using the select tool.

4) Go to Edit, then click copy.

5) Go to the base you want to merge it with.

6) Go to Edit, Then click paste.

7) You can use move tool to move the copied base.