HA Raspi Backup / Restore Problem

Hey folks, I’d like your kind support understanding how I can sort out this problem.

Key goal is to rebuild my main home assistant running within a raspberry pi 4b, starting with a full backup (using HA backup UI) with exception of Influxdb and Grafana

After setting up a fresh HA on Raspberry 3 and made initial configuration process, then uploaded the snapshot followed by a restore. However after rebooting I cannot access via web browser, only at rasp pi 3.

Original home assistant is still online with ip xxx.xxx.xxx.xxx while rasp pi 3 as ip address xxx.xxx.xxx.yyy

Any ideas how to troubleshoot? Think that after restoring, the HA assumes host ip despite being different from main rasp bi 4.

Highlighting the goal is moving from Rasp Pi 4b → Rasp Pi 3 → Rasp Pi 4b (back to initial)
Appreciate you help.
Cheers.

I solved that issue by reserving the Pi’s MAC address to an IP address I always wanted it to be in my router.

Not sure if I follow, I don’t have issues on keeping rasp pi 3 IP address.

Can you explain your advice?

Folks, just reminded that web access was configured for https:\ hence after accessing through https:\xxx.xxx.xxx.yyy:8123 is working