Loop import tempo glitch

About four or five times now when I’ve imported a loop/wav, I get a weird shift in tempo in the middle of things. If I add a tempo track and look, sure enough there is an envelope showing a pretty drastic shift in tempo. This has happened dragging from the media bay and using the import function. Anyone have any suggestions on what may be happening? It’s easy enough to fix, but if I’m somehow doing something wrong I’d like to figure it out.


Anyone seen this before or have an idea of what is going on?