I have one final suggestion, then. This *used* to work in older versions of PW. I call it the teleportation error.
Click on the immobilized TF and select create TF. Select something ineligible given the ship classes in the stray TF, like replenish or something. Trabnsfer ships from the old TF. The goal is to create a logical error while you are creating the new TF so that you end out hitting the escape key to exit the TF window.
If you are lucky, the new TF will be empty and your ships will have disappeared from the stray TF. If that happens, disband the newly created, empty TF.
Now, immediately go to the port where you want these ships to appear. Select create TF, manual select, ESCAPE. If the bit gods are in your corner, the disappeared ships are in your new TF in port.
Show me a fellow who rejects statistical analysis a priori and I'll show you a fellow who has no knowledge of statistics.
Didn't we have this conversation already?