Hi Fred,
there is a way to clear the data, in the stabiliser Tab on the top right of the stabiliser graph you have 3 dots. check and a sub menu will appear ( see screenshot in attachment)
About copying the grade without the stabiliser data, you have to right click on the gallery Tab and change the "copy" settings from the sub menu. You have to click "copying preserve the input size"
About editing the data, I think you can't do anything else then ignoring some attributes (scale or rot or pan or tilt)