I know that changing a schematic then updating the netlist then onto pcbnew will allow me to change the pcb as selecting components on pcbnew will bring it up on the schematic. But is it possible to have it in reverse.
Have any updates changes, deletions additions from pcbnew reflect on the schematic.
I’d suggest try search for “Back annotate”
Finds this, for example
As @PCB_Wiz pointed out… there are scripts that will transpose annotation changes from pcbnew back to eeschema… but that’s it.
There is no schematic from layout generation tool/converter afaik (or a sub-feature of such an app like deleting schematic symbol or tracks).