I am unfamiliar with the process of editing parts in repairshopr. It took me 15 minutes to find the nearly invisible "update part" button in the lower left when viewing an individual part's page. Conversely, the "New RMA" button is prominently located in the upper right, and colored orange. The "update part" button should be at least as visible as the RMA button, considering that part edits are much less likely to be RMA related as opposed to a simple update to the part's information.