Transfer or adjust large number of assets using spreadsheets

Summary:

We have many cases that we must work with large number of assets ( transfer, retire , adjust ..) and takes to much time using spreadsheet

Content (required):

When using spreadsheets to transfer about 600 assets for example, i notice i can't use copy paste into the (CreateMassTransfer) spreadsheet

so i have to invoke action for the asset number or for the assgiments which atctually takes time, and if we use mass transfer we notice many records not true becomes between the ( from ) and ( to) assets number.

is there any method that we can use and saving time for this type of tasks ?