My MPEG2 files in Vegas are opened by either one or the other plugin.
I noticed that those with "Audio: MPEG Layer 2" are opened by mcplug2 and those with "Audio: AC3" are opened by mxhevcplug.
Is it possible to make them all open with mxhevcplug? The reason is simple -- when opened with mcplug2, I can't change the color range (no matter what I set, the range is always Limited).
In the options under "File I/O" I have both "Legacy" options selected.