RCM GST on advance rent paid in July24

Dear Experts,

We are registered GST dealers.

We paid advance rent to unregistered person in July-24 for 6 months, for period from 1/7/24 to 31/12/24, for commercial property.

Now new RCM on rent is applicable wef 10/10/24, so do we have to pay RCM for rent from 10/10/24 to 31/12/24 now, on rent which was already paid in July-24.

Confusing scenario, please guide.