Comment 6 for bug 1837002

You could have "Paste & Keep Annotations" and "Paste & Add Annotations". "Paste" means "Paste & Drop Annotations", which is the default behavior.

Paste: Pastes components, dropping their annotations.
Paste & Keep Annotations: Pastes components, keeping their annotations.
Paste & Add Annotations: Pastes components, and brings up a dialog:
  Sorting:
    * Sort by X
    * Sort by Y
    * Sort by current annotations
  Numbering:
    * Use first free after N
    * Use first free after sheet x100
    * Use first free after sheet x1000

If I had to prioritize, I'd want Paste & Keep Annotations first.

For "Sort by current annotations", if you have, say, R3, R4, R5 and Q1, and select "Use first free after 0", then you'll end up with R6, R7, R8 and Q2 (as long as these aren't already present). If a component has no numbering, then executing the command should result in an error, saying that the block must be fully annotated.