Hi Ben! I’m not sure when you actually wrote this? This forum software is driving me crazy. Some messages get lost. I just found yours by accident. Really sorry if you have been waiting. I am working on setting up a completely other message-system.
But to answer your question! 🙂 It is a deliberate design choice that when using “Slide mode” you can drag your original drawings up and down (adjusting timing), but not change their place in the sequence.
To do what you are asking, you should use cut/paste. So, do it like this:
1) Click the first drawing (click the thumbnail in the X-Sheet) and press Ctrl X.
2) Click the position where you want it moved to (in your example – the 3rd, blank, thumbnail). Press Ctrl V.
That’s it. Your drawing will now be inserted (your 3rd blank drawing will remain, but move one down) – exactly like your example shows.
For Mac users, use Cmd X and Cmd V (not Ctrl).
Thanks,
Niels