Asset Retirement Accounts

 The EBS system I am setting up is using FA but not AR. I wondered if it is possible to use the same Asset account for the Proceeds of Sale Clearing and Cost of Removal Clearing?  Also, will the accountants need to manually adjust the clearing account when processing the accounts receivable and payable accounts for the asset?

 Finally, why does the cost center use the Account Generator default on the retirement account when most of those accounts are expense acccounts? Most setups I have seen have the Account Generator with a Balancing Sheet cost center.

Thanks in advance.