Asset's assignment (Expense Account) not defaulted to the new Asset Category updated at the Prepare

- Created an Asset through Mass Addition Create.

- Asset Category, Expense Account and Location are automatically derived during Prepare Mass Addition and the same has been defaulted to the Assignments.

Question:

For some reason if the users update the Asset Category to a different value, the expense account at the Mass Addition is getting defaulted appropriately however the expense account at the Assignment level are not getting updated as appropriate to the Asset Category changed. This requires a manual update at the assignment level.

- Is this the intended functionality? Any metalink note reference please?

- Or how to achieve it automatically at the Assignment level?