I'm afraid I don't quite understand the question.
Perhaps you can share a screen capture/video of what you are seeing as that will make it crystal clear.
The image on the right appears to suggest that all frames are exactly the same.
The image on the left suggests they may be the same but are entered into the xsheet separately.
So, that might be the first question to get out of the way...
Are all of these images the same image?
We'll move on as that may or may not be the case.
What I'm suggesting is that the image on the left consists of multiple Levels (each cell containing a different level)
The image on the right suggests every cell contains a frame from the same level.
There are several ways to move drawings into the same level but that appears to be your dilemma.
You can:
- Manually copy/paste each of those images into the same level
- Reorder/rename the images so that OpenToonz recognizes the images as a continuous sequence
- Some other method that currently escapes me.
In some instances it may be worth the effort to render out your sequence 'as is' and then reimport into OpenToonz. They should then all be part of the same Level. If your drawings are simple this may be the best way forward.
Something worth investigating... and others can comment on this... is the Merge Levels option.
I've yet to have any success with that but that might well be the answer.
.