Update positioning in all composites

Hello, there is an issue that has been annoying me for quite some time. Real-world example from twenty minutes ago:
I have glyph gravecomb and see that somebody™ screwed up the anchor positioning. So I fix it, open glyphs ograve and igrave to check, and run exports. TT, CFF, trial fonts, webfonts, fontbakery, proofing, etc.
Then I re-open Glyphs and see that glyphs such as ugrave and wgrave have changed, because the positioning of the gravecomb was only updated after re-opening the file. Now I have to run all exports again. Instead of having to open all glyphs once (or saving the file twice before exporting), would there be a way to make component positioning update consistently in all composites when changes occur?