At the moment, if two pages on two Sites in the same Nation have the same slug (e.g. "donate"), NationBuilder can confuse them. For example, if a donation is made on Site A, donate page "donate", it can be associated with Site B, donate page "donate" instead. There are no current plans to fix this bug. Therefore, NationBuilder should implement a workaround, of requiring slugs to be unique across a Nation. Otherwise, donation data remains at risk of being corrupted.
Thank you Bill - and thank you Collin for responding below. I definitely see the issue with donation pages - I will pass this along to the team and let you know if there are any updates or changes.