Project Costing - Asset transfer and cost distribution: We have a project that has 300 assets. we ha

We have a project that has 300 assets. we have already transferred 38 to fixed assets,now we would like to transfer only 76 assets,  all 114 assets have Project Asset Type set as 'As-Built' and remaining 186 as 'Estimated', Please advise on how we can transfer    only a subset of the assets in the project because when we try to transfer another batch we are    having additional fees added to the first 38 assets we already transferred.