They were unlinked and combined to avoid the overlapping shadow you can see in the newly created duplicates. Weirdly there are now TWO versions of each, but only ONE in the font. Cutting and pasting the two into the same tab side by side leads to all kinds of weird behaviour.
Interesting. It has indeed created another layer called (empty) that isn’t in the original file. Switching between them, they both are the same, with the components (ie not combined)
An additional question – older fonts often invoke these “update alignment” dialog boxes. Why is this? Was there an error in the original, or has something in the way Glyphs works changed? I’m often at a loss as to what option here is the “correct” option. I’d not want to either override a correct alignment or not correct an incorrect alignment. Thanks.
The extra layers are already in the file. They contain components and the default layer are decomposed and possibly cleaned up paths. And the components were simply not aligned properly. That is correctly flagged and you should choose “Update Alignment” for all of them.
Thanks for having. look, Georg. I’m not seeing any extra layers in the original file – I do not remember adding any. In fact if you look at the grab before OKing the dialogue box with the realignment options, you can see that there is just the one layer (see grab), and the new one called (empty) only appears afterwards. Digging into the file, I see that if I select the ‘shadow’ layer I still get the component layer, and I can only see the decomposed and unified versions if I double-click on a glyph – it then swaps to the unified version, but only for that glyph. So in order to switch all glyphs to the right versions, it appears I need to individually select each in turn?
There appears to no way to open the file without that dialog happening and the new later being added. I assume if I went back to the old version of 3 it was originally designed in, it might, but I don’t have that.