Creating custom shipsets is still awkward - has anyone found a solution?

Hello folks,

I am trying to create custom shipsets for 18 different factions from the workshop. 

I realised that if I upload the the ships at the same time I have to scroll through hundreds and hundreds of ships to select each ship for each race.

I tried uploading one set of ships and saving the custom ship style, copying and cutting those ships to a folder, and starting again with a new faction. 

That way I could reduce the number of ships I was viewing to select them more easily for the custom faction I was creating.

But of course I got an error message saying that the custom ship style was no longer recognised since the ships had gone from the DLC. 

Has anyone come across a better way of selecting ships for custom factions that mean you don't have to scroll down through hundreds and hundreds of ships when you are selecting them?

Cheers

Bren0bwan