cubicweb #1751121 migration: need fixes to run a migration of a 3.7.2 instance [resolved]

syncschema: consider etype name map before trying to update in-memory schema

migractions: not yet added final etype have None eid and should be skipped

prioritynormal
typebug
done in3.12.7
load0.100
load left0.000
closed by<not specified>