How to apply color on empty background of selection, by not affecting selection shades sharpness?

[Timertak]

So in first pickture background chess board, supposedly empty, if i choose to save it, background fills out to full black.

In second i i fill it vith white, but all hard worked sharp angles of it disapear

on third one i try to move it as selection from chess board and supposedly its whole pickture on its own not the gradient effect itself (maybe i lost selection of gradiant?)

So how should i save those sharp black shades by applying white?

[Myra Ferguson]

I'm guessing that when you saved the first picture that you saved it to a format that doesn't support transparency, like JPEG. Try saving it as a PNG to retain the transparency.

[Timertak]

Saved as png - inverted/not, interlaced/not

All same

[Timertak]

P.s i would edit by removing picture as it was similar to second picture, but Forum policy as to not be able to edit  own post, lower post quality in this case.