Hi Herrera,
I have just checked, that option is there, but I'm not not sure, that we allowed to change the house bank and Account ID, i'm getting error.
House bank 1000 1000 is pre-defined. Change is not permitted
Message no. FZ681
I'm doing it on test system, and configuration is not complete, please try at your end if its works.
Please click on edit proposal, then double click on line item, then again double click, then you can see Relocate option is there, in F111.
Regards
Javed