I've seen people complaining that fighter ops are complicated because they have to click and drag each ship individually. I didn't see this anywhere in the changelist so here it is.
If you click on a fleet and select the "Ship List" tab (not in the sidebar), you can box-select, shift-select, or ctrl-select specific ships you want moved. Next, click and drag their *parent fleet* to the new branch you want the ships under. Only those ships selected in the ship list will be moved. This especially makes fighter ops much simpler.
Eg.
Sidebar:
0 Target fleet
0 Source fleet
- Ship 1
- Ship 2
- Ship 3
Normally, if I drag "Source fleet" into "Target fleet", all ships will be moved. If I If I ctrl-select ships 1 and 3 in Ship List, then drag "Source fleet" into "Target fleet", only ships 1 and 3 will be moved. 2 will remain under the source fleet and the source fleet will remain separate from the target fleet.