Early homing torpedoes did not replace ASW weapons overnight

Did Allied anti-submarine ships keep depth charges and Hedgehog after receiving early homing torpedoes?

Yes. Older charges and mortars overlapped with homing torpedoes until the newer weapons were proven and absorbed into practice.

Early homing torpedoes entered service gradually rather than displacing older anti-submarine weapons at once. Ships retained depth charges and weapons such as Hedgehog while crews learned the new torpedoes and the technology became reliable. Squid and later Limbo represented improved anti-submarine mortars during that overlap. Depth-charge practice also survived in aviation, where helicopters continued to carry small charges for particular submarine tasks.