I need outline of many frames, I copy and change the fill of them. But the original frames changed too.

I make matte for the mouth and ### teeth. I need outline of mouth, So I copy the mouth layer, and changed it's color that inside fill. now I got a outline.
BUT BUT BUT
I found the original mouth changed its too. I can't only change one of it after copy a levels.
What can I do? how to duplicate many frames as new one?
get new frames only with outline. I need original with fill color, and new copy changed fill (alpha 0, only line)
all the original one and duplicate were changed
As you’ve discovered, copy creates a linked copy. You actually want to use the clone command instead of copy. Select all of the cells in the level you want to duplicate (click on the left edge of the level in the Xsheet or the top edge in the Timeline), then in the top menu, go to Cells -> Clone.
It works. Appreciate your help.
@Leegov,
Recommend closing this issue.
Don't forget, explorations and troubleshootings can be pursued via the OpenToonz Forum without opening bug reports on github. Link:
https://groups.google.com/forum/#!forum/opentoonz_en/categories
FYI You can use the Palette Filter Fx to obtain both the filled and the outline images from the single column.

Most helpful comment
FYI You can use the Palette Filter Fx to obtain both the filled and the outline images from the single column.