Comment 1 for bug 1937033

It's a little more complicated than that, because the "Series" option on Snap:+edit is a sort of combined selector that writes to both "Store series" and "Distro series" (due to a quirk of snap data modelling that's mostly irrelevant nowadays but mattered in the early days). But we could probably try to display the combination on Snap:+index rather than the broken-down parts.