I’m pretty sure I got basic Wavelab/Pro Tools back and forth with aatranslator by converting Pro Tools to AES31 and vice-versa in aatranslator. Then using AES31 import and export in Wavelab.
They don’t specifically indicate Wavelab/Pro Tools convert on the webpage, but the AES31 back and forth seemed to work ok for the basics of a conversion, including markers and edits I think, unless I’m misremembering. You might have to save as Pro Tools 5 or 7 first or maybe not, I don’t recall for certain. But it’s worth a try. I bought the program but don’t currently have it installed.
But if there’s info in the Pro Tools wav files, that would maybe be simpler. as bheller and SE-H request.