Merging craft changes workspace/vessel name to the merged name instead of the original name

[twich22]

It should be the other way around. When merging a vessel, the merged vessel is being added to the original. Thus, the original vessel name should be maintained for the workspace and vessel name. The way it is right now, after merging your vessel, you might autosave over the vessel you just merged or worse override a save for the vessel you just merged. 

[sir_frost]

a better way to do it is a prompt that asks how  you want it. 
with a checkbox remember my choice.