Hmmm… Workbench sends lines/blocks into a target file that is chosen in the plugin’s settings (default name: workbench). This is like collecting material in an Inbox.
I (and I believe the OP) am looking to send lines/blocks/selected-text to a file that I choose on-the-fly with an interface similar to link-completion. Note Refactor comes close with its Extract selection to new note - content only. However, this does not have the option of sending the selected text into a specific block (#) within a file. Also, It would be nice to have some options: [make/don’t make] a link after moving text, [open/don’t open] target file after moving text.
@FedeK did you find a solution?