Deletion of has many relation works wrong

[terrasoff]

• add new first has-many relation to entity (with empty id)
• save all relations
• add new second has-many relation and delete first (with empty id)
• save all relations
• first relation won't be deleted

[izac1]

it not complite solution this issue , if we use loadAll function, function dont delete all rel models , only if we add 2 and delete 1 its work , if delete 2 of 2 its load old 2 rel models