Need Advice on Sub2 deal

I’ve secured a sub2 deal recently. The first mortgage has an escrow account for insurance and taxes. I was just informed by the previous owner (who’s name is on this mortgage) that his insurance agent has somehow found out about the property ownership changing hands and wants to change the policy because of it. I am in the process of getting my own policy on this house but would like to know how an ‘insurance policy change’ at this point on the previous owners side would affect me? In this scenario is there a greater chance that the mortgage company will find out about the change of ownership? Or am I just freaking out for no reason?

I appreciate your guidance in advance.

What does the agent want to change the policy to? Since the homeowner is no longer using the property as his primary residence, the homeowner’s policy is no longer valid.