metadata-store: fix OTA 2
%+ murn ~(tap in ~(key by groups))
|= group=resource
^- (unit card)
- =/ =association:store (~(got by associations) [%groups group])
+ =/ =association:store (~(got by associations.old) [%groups group])
=* met metadatum.association
?. ?=([%group [~ [~ [@ [@ @]]]]] config.met)
~
