Generative remove not working properly

Hey ​@Amy_Mason7137 
Fun photo.

In cases like this, FF will get most of the job done.  Photoshop would polish off the job. As mentioned the faces are slightly different. That is where PS would be used: 
Place the old photo over the new one. Create a mask layer and paint in the faces to match the desired results.

Suggestions on How to Prompt
https://community.adobe.com/questions%2D404/use%2Dadobe%2Dfirefly%2Dto%2Dgenerate%2Dyour%2Dimages%2Dand%2Dvideos%2D1476088?tid=1476088&fid=404

When I use a reference image and want to keep the reference I tend to use one these prompts at the beginning of the Prompt.

Prompt used
Use the reference image, use images of the boys faces, keep the numbers of the jerseys the same, remove the fence

Prompt suggestion 1
Keep the reference image…

Prompt suggestion 2
Use the reference image…

Cheers

Nate