I had to go back and edit my original response.......sorry.
If you have sealed the decal with future, then the only way I know of to remove them would be to use a solvent to remove the future and decal...this will unfortunately remove some of your paint as well so you may have to repaint. future is a clear acrylic product and once it drys, it's not easy to remove
If there is no future, or other sealer on top of your decal, then use the solvent, such as Microscale Micro Sol, to remove the decal by all means !! It shouldn't harm the paint job at all.......or the future !!
If your only trying to remove the glue, or adhesive film around the decal, try using a soft, damp cloth with a small amount of MILD dish soap. Then apply a clear coat finish.....just make sure there is NO soap left on the model !!!!
I have yet to see a good, or easy way to remove Future that so many modelers seem to be using these days.......if ANYONE has a good way to do this without messing up your great paint job, PLEASE let us ALL know !
Sorry for the misunderstanding,
Jerry