Sippy I cannot reproduce the issue, just created an extra parking slot named Soporte:
parkext=700
parkpos=701-704
context=parkedcalls
parkext_exclusive=no
parkingtime=45
comebacktoorigin=no
parkedplay=both
courtesytone=beep
parkedcalltransfers=caller
parkedcallreparking=caller
parkedmusicclass=default
findslot=first
[parkinglot_Soporte]
parkext=800
parkpos=801-804
context=parkedcalls_Soporte
parkext_exclusive=no
parkingtime=45
comebacktoorigin=no
parkedplay=both
courtesytone=beep
parkedcalltransfers=caller
parkedcallreparking=caller
parkedmusicclass=default
findslot=first
Appears correctly on res_parking_additional.conf