iPhone 7 No front camera plastic holder/bracket/clip in replacement

Hi all,

I'm currently in the process of replacing the screen on my Iphone 7. Starting to reassemble the front camera and noticed that the replacement screen doesn't have the two plastic holders/brackets for the front camera and proximity sensor (see link) like my old screen does. Is this going to be a problem? Is it possible to transfer them over from the old screen (they seem to be stuck on there pretty tightly...)? If I have to purchase these how do I attach them, would an adhesive of some kind be necessary?

Thanks in advance

In case you don't know which parts I mean!