When I import the .ma that I exported from Matchmover, first I get an error from Maya saying it cannot import the first image of the image plane as MM sets this to 0.png by default and it cannot be changed in the export dialog box (it's greyed out).
Even after re-importing an image plane for the camera, as soon as the camera is no longer selected, the image plane disappears in the viewport. This makes modeling impossible because selecting an object deselects the camera.
I've trashed my prefernces, set the clipping plane to 1000000, made sure "in all views" is selected, ect. No dice.