Ability to NOT include background elements in generated images

Hello Everybody,

I would like the option for the Generated Fill item to NOT include merging the existing background.   

For example, today I entered in the Generate prompt to give me a tree in between two houses.   I wanted to be able to fine-tune the tree so I can move it around the yard so that I can place it exactly where I want it to be.  However, the generated tree incorporates some of the background of the house, such as a window.  So I can't move the tree around -- even a little bit. 

I suggest in the Single Adjustment panel, there can be an option to turn off incorporating the background in the generated image.

Thank you!

Rowby