An index stored in Alembic wasn't used. Often this index is a no-op (i.e. index[n] = n), in which case the result was fine. However, when it isn't, it caused issues.
An index stored in Alembic wasn't used. Often this index is a no-op (i.e. index[n] = n), in which case the result was fine. However, when it isn't, it caused issues.