Duplicate/random files appearing in project Audio folder after export

[Simon Wilkinson]

I'm a long-time Sonar/CWbB user and never seen this issue before but I've just noticed that after exporting a mix to my desktop (or any other location) I'm also gettiing duplicate mixdowns with weird filenames appearing in the project's Audio folder.

For example I just exported a mix to my desktop and then after it had finished exporting I also saw there were 2 new files created in the project's Audio folder with these filenames:

406b97a3-8529-45a2-9bb3-3ff7397ec802-e17b6c85781823cac722e8cd83a3fbd7.wav
406b97a3-8529-45a2-9bb3-3ff7397ec802.wav

Both these files are identical to the exported 'actual' file (which has the correct filename). I took a look in the project Audio folders of other things I've been working on recently and noticed they also have them e.g:

072ead31-7850-4d48-8b86-0c0f4950c897-c17cc9b5ef9cfd8a0b0b90f2908a60d0.wav
072ead31-7850-4d48-8b86-0c0f4950c897.wav

What's going on here?