Default [Q]Sony Flashtool Version 0.9.15.0 built on 15-03-2014 [XMS]

Flashtool Version 0.9.15.0 built on 15-03-2014 i didn't back my TA partition before unlocking my bootloader . But i can see a RLbootloader file in the firmware folder of this software . now my question is ,does this software automatically back up my TA partition before unlocking my bootloader ,does the file "RLbootloader" located in the firmware folder of this software is my own back up TA partition ? Cuz im planning to relock my bootloader .