hey fizzy fizz
What i'd also do is load in your samples first, this way your samples will be named. You can always rename them after. There's a danger when you create a new project without any samples, that you will create erroneous files called 'new project' but with no samples.
See the file attached, the green area is where you can open your samples. You can remove it with the X. You can then rename with the name at the top. So just open any project and start replacing the samples. Check that there's not more than 1 sample in the sampler layer, save as and you're good to go
Thanks, Stuart