Exportto wav format file

Hi everyone,
I have recorded a project with about ten tracks and all plays well but when I export to wav and then listen to it - some of the tracks seem to stop half way through. Am I doing something stupid??

Sorry, I don’t understand about the “10 tracks”. Can you give us an outline or step-by-step what you’re doing?

Do you have one long file with 10 songs that you’re trying to split into 10 separate files? Or, do you have 10 separate files/songs that you’re trying to combine into one long file? Or, are these 10 tracks to be mixed, such as a guitar track, drum track, vocal track, etc.?

If you are combining files, how long is the finished program or what’s the final file size? (There is a size limit for WAV files.)