cross fade on 2 audio pairs - problem

Hello,

We work on Adobe Premier Pro CC2017 using multichanel sequence. We have to work with 2 stereo audio channel in material ( a12 - voiceover , a34 -

original sound).

Before we will put clip(material) on timeline we are changing the clip audio channels on appropriately -  Format: adaptative, active channel per

clip: 2 and number of audio clips: 2.

When we make some cuts in material on the timeline we have a problem with cross fade's.

If we apply it on two audio pairs(apply default transitions), then sound from a34 is detectable in a12.

If we will establish this effect only on a34, then on a12 we will hear wailing.

Unfortunately this effect also appears on exported files. Very often we are using this effect, and at present it is necessary to do it by hand what

is extending the work and is tiring.

Can you confirm this defect? Whether you know some way which let us pass this problem?

Thanks

Edit501