You should be able to edit inventory item numbers. We've had a number of people involved in ordering merchandise and materials who did not follow any sort of numbering convention when adding items. As a result, our inventory is a mess. In order to fix it and have reports/items in order, we need to renumber/rename things. Currently the only option is to inactivate the old item and create a new inventory item with the new number. Doing so would result in the loss of all historical information on that item. Additionally, how are you supposed to do that when you have inventory in the system under that old number? Why is something so simple not allowed?