There currently is no way to do a bulk Reverse Last Transaction. Once a group of assets are disposed or transferred, there is no way to easily reverse those transactions if a large number of assets need to be reversed. You have to individually go into each asset and click Delete Last Transaction. There have been a few occasions where an accounting department has given me a list of hundreds of transfers, which I create a custom group for, and then bulk transfer them. After that is done, there have been times when the same accounting department has then said a few hundred of these assets were on the list as a mistake and should not be transferred. This has led to an incredible amount of time manually deleting the last transaction of each individual asset.