Hey @Chaplain_5-15,
thanks for sharing some tips and tricks.
@Hayawen contacted me and felt sorry for all these epb file hacking, so he went ahead and added a tiny but powerful tool to HWS Connect.
Once I made it a bit more pretty, I will announce it on a larger scale and link it in the Garage Guide, but feel free to use it already 
https://empyrion-homeworld.net/hws-connect.html#page-change-vessel-type
Once you logged in to HWS Connect, choose your blueprint file you want to convert let’s say a HV.
Then choose the destination type, in this case CV.
( steamapps\common\Empyrion - Galactic Survival\Saves\Blueprints )
Click on the Convert button and save it under a new name e.g.
That new name is now your HV, converted to a CV 
All Signal logic and stuff are kept and not resetted like the method with the file copy paste stuff.
Pro tip:
once you resave your .epb file while you are ingame, you can just spawn a new version of it on the fly. You don’t need to go back to the main menu even.
Happy building!