Migration Dropping and Creating indexes

[TJonesy]

Not sure if this is intentional or not but it seems to be a bug. Every time I create a migration propel drops and recreates a bunch of indexes on tables not modified since the last migration. This is really annoying as it fills migrations with unrelated commands that sometimes cause errors. Is this intentional or could it be fixed somehow? I am getting about 5 of these per migration.

DROP INDEX tablename_u_8db8bc ON tablename;

CREATE UNIQUE INDEX tablename_u_8db8bc ON tablename (columnname(60));