Exporting Instruments and Audio files in Interlived format when stereo. How to?

I upgraded to Cubase Pro 13 to be able to export more easily tracks from Cubase to Pro Tools and I am still experiencing the problem of obtaining only split stereo files exported even when the tag on INTERLIVED is on. How can I get the correct export?
I believe is a name convention and it should end with .L and .R instead of A1, A2 etc. Where can I change the naming defaults?

I found out how to do it. Thanks.
In the Mixdown window, I have to select, not very logically, to export in SPLIT mode and then I have to choose, in the menu, #4: Audio.L.wav.
I hope this helps others with the same problem.