Saving Decals internally

I have just (much too late I now realise) started saving my Decals internally to each model... clearly there isn't the same intuitive file search for decals if folders are renamed,  not to mention the fact that you aren't notified that links have been lost (until you try to render).

My question is this... clicking the box in the document properties to save decals/appearances internally effects decals created from then on. But how do I do the same for already existing decals? Surely I don't have to go through and recreate them all?!

Any help would be much appreciated.

Thanks

SolidworksPhotoview 360