Preferences ->Global->Audio Data. Choose:
"
Always import broadcast Waves At Their timestamp"this will fix your problem.

Also check "Allow Importing Of WAV File Cue Markers" if needed.
By default, SONAR ignores the BWAV timestamp and inserts the file at the Now marker like any other wave. You have to check the "import broadcast waves at timestamp" option in order to have the BWAV file find its own location.
have fun.