If you want to run this application “as is”., just port it to the other system.
If the objects (programs, files, etc) are in specific libraries, do SAVLIB on the source system and RSTLIB on the target system.
If you have hard coding for USRPRF, OUTQ, business rules, etc. you will need to make those changes on the target system.
If this is a new machine and you want to copy the complete source system to the target box, take option 21 from the backup menu and use that to restore on the target system.
If the target system is at a lower release level than the source system, get it up to the same level before you do your restores.