Serialization Auto

I need to be able to pull sequential serial numbers each time I open coreldraw and send to the laser for etching. I have a customer that buys in batches everyday and I need to be able to track the serial numbers already used so they don't get etched again. Is there a way to do this in CorelDraw? I have looked into the print merge feature, but I may be using it incorrectly as it doesn't appear to pull number sequentially and track what numbers have been used before.