HI Jack,
I mean to say all the files that are pointing to SSID should be changed to TSID or BRTools will take care of that?
You need to change all the files pointing to SSID to TSID under the control file which you created for your target system from the source .If using Linux than use command
:%SSID/TSID/g . This will change SSID with TSID.
Regards,
Gaurav