Does the muscle need to be repaired during an explant?

I am seeking information about breast implant removal with implants under the muscle. I am concerned about my muscle not being the same. This question assumes the capsule will be removed. Some doctors are saying the muscle will heal itself back down to the chest wall. Others say you must suture it down. Then others say muscle is too fleshy to suture and could tear and bleed if flexed during healing. Please give me insight into muscle healing and what to expect during healing as well as how long.