Calibrated maps don't show up

I am using builtin map calibration feature. First I take a photo with integrated camera and then I calibrate. Locus is doing that and asks me for a name of this new created map. Image (working as a map) is displayed however there is no way to control it. I can't find this map under Online/Offline, nor in any other Locus option. There is no way to turn-off or disable this map, not to mention correct or delete. It is problematic because it is on the top of for example some important area so now I see only this image and can't access the online/offline map below.

BTW : Is there a way to import image without calibration (on purpose) ? to work with image as a sqlite map but non-calibrated. Any mistake in calibration and my image is skewed and it is not exactly what I want as I see content on my image and rectangle without calibration will be just fine.