Please refer to the following according to your case.
1. If the creator is the same
If the usage conditions for model data you downloaded are different from before...
If the creator changes the usage conditions for their model data after you downloaded it, the current usage conditions might differ from before even though it's the same character. Please use the model according to the usage conditions set at the time you downloaded the data.
If the same character was registered multiple times...
You can register multiple characters with the same design but different usage conditions. Please follow the usage conditions set for each character.
2. If the creators are different
Depending on the usage conditions, different creators can register the same character on VRoid Hub. Upon registrations, different creators may set different usage conditions. Please use the model according to the usage conditions set at the time you downloaded the data.