XLIFF as source file

We are having trouble getting an xliff file returned in the same format in a memoQ integrated project. Instead, it is returned as a mqxliff file. I asked XTRF Support about this and after a few weeks of testing the end result is that xliff files will always be returned as mqxliff files. I find this really hard to believe!

Does anyone have experience using xliff files in an integrated project with memoQ and receives the translated files back as xliff? If so, can you please share if you had to change any of the automatic action settings?

Thanks!