proxy media and full resolution media must have matching audio channels

Hopefully there is a workaround to the following situation:

In using proxy files for a jvc ls300, the following error came up when trying to "Proxy>Reconnect Full Resolution Media":

- "proxy media and full resolution media must have matching audio channels"

Unfortunately, as with all encountered errors, I was not aware that dual mono vs. stereo audio would be an issue. Especially, given all my edits (many) are finished. Now I'm trying to reconnect full 4k videos so I can remove proxies to reduce size for archive.

- Full Rez 4k footage has mono 2 channel (referenced in the accompanying xml file next to the video.

- Premiere only shows mono channel.

- Proxy file (1024 x 540) has 48000 Hz - 16 bit - Stereo.

HOW can I workaround this issue and Re Attache (reattach) the full resolution files?

Any workarounds are much appreciated, without having to scrap the whole project and start completely over.

Thank you.

Wally

P.S. Here are the properties from Premiere for just one video file:

Full Rez 4k footage:

File Path: Z:\ONeilAgency\MoFo_Video\jvc\DCIM\100JVCPR\MOFO0001.MOV

Type: MPEG Movie

File Size: 3.46 GB

Image Size: 3840 x 2160

Frame Rate: 23.976

Source Audio Format: 48000 Hz - 16 bit - Mono

Project Audio Format: 48000 Hz - 32 bit floating point - Mono

Total Duration: 00:03:21:00

Pixel Aspect Ratio: 1.0

Alpha: None

Video Codec Type: MP4/MOV H.264 4:2:2

Proxy Media

File Path: Z:\ONeilAgency\MoFo_Video\MOFO0001_Proxy.mov

Type: QuickTime Movie

File Size: 1.45 GB

Image Size: 1024 x 540

Frame Rate: 23.976

Source Audio Format: 48000 Hz - 16 bit - Stereo

Project Audio Format: 48000 Hz - 32 bit floating point - Stereo

Total Duration: 00:03:21:00

Pixel Aspect Ratio: 1.0

Alpha: None

QuickTime Details:

Movie contains 1 video track(s), 1 audio track(s), 0 closed caption track(s), and 1 timecode track(s).