Group Kerning vs Exceptions

Glyphs
1

I’m in the process of converting an old font with kerning pairs to class-based kerning. I’m running into something odd, and I’m not sure what it means.
Say I have ÄV kerned with a kerning pair (kerning exception, like it’s called in glyphs). I assign Ä a class so it kerns like AV and delete the exception. So now I click on Ä and on the right side it shows the kerning number and a lock. So far so good. But if I move the cursor to the V next to it, it shows on the left the same number but with an open lock. I don’t get it, shouldn’t it also be closed if it’s the same pair? or is it a bug?

While I’m at it, I have a suggestion. If a letter has both pair and class kerning, I’d like to see the value of the class kerning too, even if it’s grayed out, for reference.

2

If the lock is open from the V, then you have an exception. You can have an exception from both sides. Have a look at the kerning panel. There you can see if the pair is gray or blue.

3

I’m not sure i understand. If I kern @A(left) and @V(right), surely the right value of @A should be the same as the left of @V, no? Or can you have different values for the same combination?

4

If you kern @A and @V then you are right. But it might be that you kerned @A and V.

5

Aaaah! I get it now. Thanks!