Changing Parent Expnd Org Names - Impact to Burdening?

Hi,

We want to change some parent expenditure org names that are used in the project burdening hierarchy. We do have to re-burden (cost, revenue) for prior years as rates become finalized for those prior years. How will changes to the org names affect prior year re-burdening?

Any info on what is advisable with respect to changing org names, adding/deleting orgs, changing the project burden hierarchy etc. will be helpful.

Thanks in advance!