Looks like they are heading towards the partial amnesia track. Here are some possibilities the creatives and Snakeman can mull over:
Possibility No.1
Milsi lies in coma unbeknown to his family. Someone smells this and realises the opportunity to mint money. Lands in SM and spins a yarn about how he is Milsi but has lost his face due to the cliff fall and had to get a new face on. He gives a few incidents from Milsi's past which only Ayesha could figure out (you see the real Milsi must have blabbered these things when he was still in his coma. Dont ask me how he can speak when he is in coma. This is a BT show. Anything is possible). Ayesha is elated. She screams "I've got my Milsi back." The imposter stays on in SM till he swindles Milsi's wealth and elopes with Ayesha (now who would protest if a pretty young woman willingly throws herself on him).
After their disappearance, the real Milsi lands up in the chawl with amnesia, where he meets Prachi. You see Prachi resides in the chawl after the imposter sold off the SM to the higest bidder which happens to be the Viranis (of Kyunki fame) who had won a bumper lottery. Here at the chawl Michi meet and fall in love all over again.
Possibility No.2:
Milsi has a partial amnesia. Only this one takes him as far back as his fifth birthday. The Shahs and the Misras, hearing of his whereabouts, bring him back to SM where he gleefully runs into the nursery he himself had made some months back for his baby. He considers Prachi his best friend. Does'nt like Ayesha since she is forever pawing him and suffocating him with her hugs. He pairs up with Suyesha and together they drive out the wicked witch of the west. Prachi takes good care of baby Milsi and over a period of time Milsi regains his memories.
Possibility No.3
Milsi is brought home where he runs into Ayesha's arms as soon as he sees her (He has partial amnesia and remembers only his pre-Turkey chawl days). Prachi is furious seeing this. She runs into the kitchen, returns with the largest saucepan in her hands and hits Milsi hard on the head. Milsi swoons and has a full amnesia. She then carts him to their bedroom where she has preserved all the pictures he had so lovingly hung on the Mehendi day. She then changes the locks to their bedroom and hangs a big "Do not disturb" sign outside their bedroom door. Milsi keeps gazing at these pictures for days on end. The big ugly P ring on his finger also intrigues him. Finally one day it dawns on him he is married to Prachi and was all set to marry her again when some brainless character sent him off over the cliff on a joy ride without a parachute! Bingo, Michi are renuited again.
Possibility No.4
Baba is dead the minute he comes to know that the corpse in the morgue bears a striking resemblance to Milsi. They later come to know of Milsi's whereabout. Ayesha tags along and when Milsi regains his consciousness realises he has had partial amnesia and does not remember the post-Turkey days. She decides to fill in the blanks for him. Only she gives her own version of it ( Milsi returned from Turkey a rich man, bought over SM where he now lives, married Ayesha and took revenge against the Shahs. The Shahs then hit him on the head and made him lose his memory in the hope of usurping his wealth.) When Suki tries to intervene, Ayesha takes her aside and threatens to break the Ritwik raaz to her family. Having ensured Suki's silence Ayesha is confident that Milsi will believe only her story which he does. They return to the SM where Prachi is treated like a servant and Ayesha becomes the mistress of the place. Milsi for some reason just cant bring himself to be intimate with his 'wife', Ayesha. Everytime she approaches him he feels repulsed by her. So they dont really consummate their relationship.
Although he is initially rude and impolite to Prachi, he slowly falls in love with her, admiring her gentle, loving, sacrificing and caring qualities. He then ends up having an 'extra-marital' affair with Prachi who conceives their 'love child'. Meanwhile Ayesha is a frustrated woman as months pass by and Milsi shows no interest in her. Finally not being able to restrain herslef any longer, she takes him on a honeymoon where on the very first day both of them slip in the snow and go rolling down the slope. Unfortuntely Ayesha does not survive the fall but Milsi does and Bingo he gets back his memory. He rushes back to his wife, who in the meantime has given birth to their child who is a splitting image of Milsi (just in case he has some doubts).
I guess that is enough fodder for Snakeman to weave his tales.