That is only my experience and what i saw and how i used them, no irl stuff or manual, just my exerience , worked almost always. Esp magic I. All missiles exept 9B uncages the moment they lock on. 9B is next to impossible to use due to no indication where exactly it is and you have only super small FOV where you have to keep enemy until missile is fired.
Iirc, there is no symbology for any missile. In the future atleast JULI, 530Ir and maybe, not sure, magic I will get radar slaving. The first 2 for 100%,magic I is highly unlikely.