True, dear Piem, when you select nothing in the Layer, you rescale all the objects which are in the active Layer. The problem is elsewhere, and there is no proper solution. I guess that this happens for two reasons. First, one has the impression that this software although it has real qualities, has not, by far, the interface quality that Photoshop (or Illustrator) have. It's a kind of crude replica of Photoshop, in which Celsys, the original manufacturer, tried to turn around the hundreds of patents developped by Thomas Knoll and his team, but with such improvements in the direction of comic artists that it is nevertheless the sole serious modern comic inking solution currently available. Second reason, it has been designed for Japanese mangakas only (if we European, Belgian-style comic-realistic artists use it, it is great, but it was NOT made for us), and I guess that mangakas work only when they have a signed contract by a publisher, which implies a fixed paper size, and unfortunately this is not our situation. We have to prepare test pages before that a publisher signs.
Pending the answer of other users (and I am grateful to yours), I consider that the way to follow might be to begin with the page dimensions that are supposed to be sufficiently big. Drawing is better in the most vector mode that is possible (I draw everything in Vector mode except plain black areas, and even I try to close them entirely with vector curves). If the future of the project says that the final page dimensions are false, create a complete new blank page, and copy the entire existing one into the new file, Layer per Layer. I made tests: if you copy vector elements into a New Layer, even in a different file, this new one keeps the vector character of the original elements, i.e. they stay dynamically modifiable. If you merge two Vector Layers, the resulting Layer is a Vector one, and that is the key point!
