
Hi,
Please follow the steps below for your scenario:
Step 1: Change the asset life to 10 years. (You can use Data Management for a bulk upload.)
Step 2: For the posted depreciation, since it is within the same fiscal year, you can reverse the depreciation transaction. Once the transaction is reversed, the system will update the remaining depreciation period. For reversal, you can do from the initial depreciation journal. This will reverse depreciation for all the transactions that was within that journal.
Step 3: Users can then repost the depreciation using the Depreciation Proposal.