Adding new depreciation area to deactived assets

Hi.

I have few questions relate to adding new depreciation area.

After copying existing depreciation area (OADB) and activating new depreciation area for all asset classes (OAYZ),

I have open new depreciation area (AFBN), but I came across few issues.

1. All existing assets for new depreciation area still have copied (one already existed) area's depreciation key and useful life.

    It didn't inherit depreciation key and useful life from new depreciation area (from OAYZ).

    Example: Existing area 40 has dep key Z200 and useful life of 10 and new area 50 has dep key Z150 with useful life 30 in asset class 200.

                     When AFBN is done, asset 99999 which has asset class 200, shows area 50 with dep key Z200 with useful life 10, instead of

                     dep key Z150 with useful life 30. What do I need to do to correct this?

2. I noticed that new depreciation area is not created for all deactivated assets. Is there a way to create new deprecation area for all deactivated assets?

Thank you.