.MXF proxies loading with incorrect colors

So, I'm shooting with an R5 C and I've opted to record proxies in camera because, for some reason, Media Encoder hangs the whole system when trying to create proxies for more than one file (13900KS, RTX 4090, 128GB total system memory installed, Windows 11 Pro, apparently my computer isn't quite powerful enough to render out proxies if other posts I'm reading are to be believed). Premiere 23.6(?—the recent update) for what it's worth.

Anyway, more to the point, I am recording MXF proxies because the audio channels on the MP4 proxies don't match up with what's recorded in the CRM files and there's no workaround that I can find to force Premiere to just attach the damned things (aside from copying the audio out of the CRM files with ffmpeg and mapping them correctly on re-wrapped MP4s, but ffmpeg complains when you try to add more than 2 mono or 1 stereo audio streams to MP4 files even on the latest build—no idea how Canon managed to make it work on HEVC clips, but that's a different and only tangentially relevant discussion to have with my former computer science professor.. I record audio externally with synced timecodes anyway so I really don't care if none of the channels exist in either file, I just need them to match so Premiere will shut up and just attach the proxies).

When attaching the MXF files, I've noticed in the timeline that when I switch between proxy and full res, the colors and levels are WILDLY different. Now, comparing between the MXF files (in MPC set to interpret the footage as faithfully as possible) and what Canon's raw developer reckons the raw files look like, colors and levels match. Comparing the MPC playback to Premiere's reckoning of what the raw files look like (after it takes its sweet time to load the preview), colors and levels match. Messing with MPC to get it to look like what you get when applying one of Canon's CLog3 LUTs, THEN Premiere's interpretation of the *proxy* matches (and basically looks nothing like the untouched raw file). As such, I can only assume a LUT is automatically being applied to the proxy file I'm trying to attach. This is kind of a massive pain when trying to grade.

Is there a way to disable this or am I just kinda boned here?

No relevant options exist in Interpret Media, Source Settings is grayed out on CRM files (with or without attached proxies).. I'm still digging through the preferences to find SOMETHING, but at this point I'm not holding my breath.