What happen to mosaic when domain is not renewed?

I have been thinking of issuing a series of limited mosaics for some of my users.
And the next question arose, what happens to the mosaics when the (sub)domain is not renewed?

Can you continue to transfer the mosaic between accounts?
Are they are deleted? Are they marked with any field?

Thanks

@xrltechcorner after namspace expiration all mosaic in it will also expire and it will be not possible to transfer it.

Ok, but after expiration the mosaic is still returned when call NIS API?

Retrieving mosaics that an account owns

API path: Request type: GET
/account/mosaic/owned

Description:

Gets an array of mosaic objects for a given account address.

shouldn’t be returned but never checked myself.