Server Utilities :: Triggers Does Not Fired While Doing Import In Oracle9i

I am trying one simple operation on Oracle9i DB. I am exporting a table data and trying to import it back. The triggers associated with the insert operation for this table are not being fired during import. Here is the commandline i am using to achieve the same.

1) Exporting the table data.

$ORACLE_HOME/bin/exp SMS_60/SMS_60 file=callfwd.dmp tables=callFwd_customerList TRIGGERS=Y

2) Importing the same data.

$ORACLE_HOME/bin/imp SMS_60/SMS_60 file=callfwd.dmp tables=callFwd_customerList ignore=Y

Import ends with success with all the rows imported in the table but the triggers associated to this "insert" operation.