Is it possible to drag a cell and then place it in a different repeating group, that has the same type of content of course. Or is just possible drag and drop inside of one repeating group?
Hello, @alexej.041028. Thank you for your question.
Sure thing it is possible. The setup example you can find on the plugin demo page (it’s the Moving between databases tab):
Also, if you need an example of how to setup moving cells between databases with different data sources, check the last tab on the demo page, called Kanban Board:
Hope it helps. 
ok, In the demo page when I drag the cell to a different RG it pauses for a few seconds and the page loads and then it changes. Will the same thing happen if I use the plugin or is it just in the demo?
Technically, the page is not loading when you drag the cell from one RG to another. The process bar appears on the browser because it performs the plugin/Bubble workflow. We have added the preloader for the user’s convenience and understanding that their action is processing.
And, to answer your question, the same won’t happen in the plugin in your app when you install it. It will just take a few milliseconds before the dragged element is moved to another RG. The preloader animation, etc. is just a design part that we have added to the demo. The “bold” functionality, with the correct plugin setup, will just trigger the browser’s visual element (the process bar) and will take a few milliseconds-second to finish performing the plugin’s workflow.
Hope it helps. 