I have a Lowrance 332 on my console with an older Navionics chip. I'm putting a 520 on my bow networking this with the 332 gps puck. I don't want to have to buy 2 new chips. Can I get a new navionics chip for the 520 and use my older navionics chip in the 332 without problems?

Thanks!

Yes you can. The Network does not allow you to share chip information between units. Hopefully someday that will change. But for now each unit can only use the chip that is inserted into that particular unit.