Hi AntonioKD, when you say the acquisition cost is posted on the proper account, do you mean it has been coded to the correct General Ledger account? When acquiring assets via a Purchase Order or Invoice, you select Type = Fixed Asset, and set the No. to the corresponding Asset. When you receive and invoice the asset the asset will become acquired and boolean field / tick box will become ticked on the asset card.
In the scenario a user has just posted the invoice direct to the G/L account and not linked it to the Asset Card, use a Fixed Asset G/L journal with a line crediting G/L Account and a line debiting with Type set to Fixed Asset and the No. set to the corresponding Fixed Asset card.