Create a project from plain SDLXLIFF files?

Hi,

Some clients don't send packages but plain SDLXLIFF files for translation. When we get many of these individual SDLXLIFF files, we would like to group them into a single project.

So far I created a new project in Studio and specified the SDLXLIFFs as source files. This seem to work, but the files are altered slightly during project setup in Studio, which makes me a bit nervous. Therefore, I replaced the altered SDLXLIFFs with the original ones that I received from the client.

So I'm wondering what's the best way to create a project from a bunch of SDLXLIFF files?

Thanks
Frank