YES to both questions.
Use both with care.
Automatic Set Relocation is the feature name and requires a SRCD password be setup in CDB. Also, make sure CSC is in your history record and your local terminal setup, and make sure you can read what is displayed when you do an IDU in LD 32 - if not change your terminal setup to 7/space. Then read the Automatic Set Relocation section in your Software Feature Guide. It is best to be very systematic when using this feature to not get lost phones in your system.
The other way is to use the MOV command.
If DN 1111, TN 4.0.0.1 is in station A moving to B
DN 2222, TN 4.0.0.7 is in station B moving to A
Find an unused TN
LD 20
REQ: LUVU
Type: 2000
TN: <cr>
4.0.0.15
Move station a to available TN, Move station b to station a's TN, Move station a (now on available TN) to station B's TN.
ld 20
REQ: MOV
Type: (enter phone type - all phones must be digital or analog)
TN: enter current TN
TOTN: enter the TN to be moved to
Don't use the MOV command if this set is monitored or an ACD set.