Unable to update a supplier name, site name or contact name while a negotiation is active?

We are in the process of merging our suppliers,sites and contacts from multiple systems into Oracle EBS.  We are finding that if we update the names to be more consistent, if there are any active negotiations out there for the affected suppliers/sites, they have to resubmit their quotes?

Do we have to make sure there are no active negotiations before updating a supplier NAME, site NAME or contact NAME?  Why are the names stored in the tables rather than just the IDs?

This is the error a supplier is getting on a negotiation response/quote in iSupplier when their supplier site name was slightly altered.