Incremental update to Allegro

 Hello,

 I have been working on a PCB design in Allegro based on a Cadence schematic. I have removed a few components from the schematic during the PCB design and so need to update the schematic part annotations (to be incremental). This causes problems in Allegro when I create the new netlist. Is there a way of syncing the annotations between Cadence and Allegro? 

 Many thanks,

Matt