Welcome to TVPaint Community forums !

Hello again.
I want to make a loop animation.
For example there is 4 frames loop animation, something like this gif image.
(This is example gif.Of course my actual animation movie is much more complicated and has more frames.)
it's ping-pong mode loop animation,and I want to make another loop animation using its 3 and 4 frames and add some effects to them,something like this. I want to use those 2 pattern animations in flash file.
To make them, I need to make two project files, main project that contains all 4 frames,
and sub project files that contains only 3 and 4 frames of main project.

So I want to ask, is it possible to reference only 3 and 4 frames of main project in sub project file?
I read help file and page 8-13 says X sheet can load project file, but I can't. There is no such an option in latest TVPaint. If this function is already removed, what do you think is the best way to make my animation? I need to render 3 and 4 frames and add them to sub project file?

Best way is indeed to render out the exact frame range you want to re-use, or Modify the project (which creates a copy) in the same way. TVP has no way to determine a frame range for animation used from another project file.

OK thank you. So It's just a mistake in help file.