if you disable "automatically add new scopes and subnets" within DHCP Server settings, then you will be able to access list of new discovered scopes by going to DHCP Management page -> toolbar item 'Add' -> Add New Found Scopes.
It will take you to page with a list of orphaned scopes, where you will see all scopes, which are not mapped to a subnet. You will need to manually identify new scopes you want to add.
There is a known issue, that DHCP scopes are sometimes duplicated after server is scanned for the first time. Not sure if that is your case, but if you already had subnets created manually, then IPAM should map scopes to those subnets instead of creating new ones in 'Discovered Subnets' group. When you go to DHCP management page, to DHCP Scope tab. Can you see any duplicates in the grid, where list of scopes is displayed?
Thank you for the answer. Yes, I do see duplicates within the grid of scopes listed, at this point just two of each scope.