Just replace or remap your network drives or share to point to the new IP address or set up a hostname alias that points to the newer 10Gb ip address and use that.
Networking Primer link
https://www.truenas.com/community/resources/10-gig-networking-primer.42/
&
https://forums.truenas.com/t/10gbase-t-best-to-avoid-it-if-you-can/1594