Hi Patrick - thanks for your respsonse.
I've followed this step previously and manually deleted them from the google merchant center and then pushed the app to re-publish them / have done this step a few times. They are all listed as published but there is still 'no products waiting for approval on the merchant center'. Just the previous products listed as dissapproved.
I've sent out an email for support as well. Any further help would be much appreciated.
Thank you,