How can I keep audio files (wav) in my SVP files? (possible bug?)

Kind of a dumb question, but I’ve noticed that everytime I reopen a svp, the insturmental audio track that I put in is always missing. I just drop it back in, but it gets pretty tedious. Is there a way to prevent this? The issue has only started after the recent updates.

「いいね!」 1

Sounds like a bug to me.