The activation or not of Nested Groups has a direct impact on importing groups in UVMS.
For example, for a standard definition as:
Group A
Group A1
User1
Group A2
User2
Group B
User3
If the Nested Groups are deactivated, the import of groups A and B in UVMS will result in:
Group A
No user
Group B
User3
If the Nested Groups are activated, the import of groups A and B in UVMS will result in:
Group A
User1
User2
Group B
User3