Cannot add 1099 Flags to Intercompany transactions journals Merged

I have a firm who would like to add 1099 flags to the journal entries created from an Intercompany transaction. On the invoice page there is no dropdown menu available for 1099. Once you pay the intial invoice and check the Journals created from the ICT you can click on a 1099 code box that will make the dropdown menus appear for the journals. You cannot click on those dropdowns and set a flag. Why would the button be there if its not supposed to be allowed? Why not allow the 1099 flags to be edited but not the account information? The only work around at the moment is to got into ANY invoice that has ICT that they want to code and delete the ICT and enter them as a separate journal entry.