Hello HeFed,
I haven't been able to replicate the issue here, though testing has unearthed some other inconsistencies.
I've tested WAV, MP3, WMA and MPEG-4 (video) files and have found the returned WAV file from ADR to be consistent with the original.
An minor odd thing happened with a WMA file. In PD12 its duration displayed as 05:48:00. When I sent it to ADR, it displayed as 05:47:974 (which is only 26 milliseconds different). After adjustment, back in PD12, it displayed as 5:48:00. That's probably down to the difference in timecode accuracy between the two.
What adjustments did you make in ADR? Could you attach a sample of your audio file?
PIX
PIX YouTube channel