[firebird-support] unwanted triggers present

[fvillan...@essedata.it [firebird-support]]

Hi,
 in my db some tables have strange triggers: 'CHECK_X' ACTIVE POSITION 1 AFTER 
UPDATE or AFTER DELETE where the 'X' is a number. All these triggers are empty 
(seeing them with flamerobin).
 I tried to delete them but after this i have had to restore a backup because 
the db was malfunctioning.
 It was originally created with interbase and then moved to firebird.
 The DB works properly but these 'presences' are very odd.
 
 ????
 Thank you.
 Fabrizo