Between the same versions of the Manager, you can export and import Ignore rules. When you export, the selected Ignore rules are exported into a .xml file. You can then import this .xml file into a Manager to create the Ignore rule contained in that .xml file.
Select Intrusion Prevention → Advanced → Policy Import → Ignore Rules.
Specify the required options to import the ignore rules.
Option
Definition
Append the existing set of rules
When selected, the Manager appends the ignore rules to the existing set of rules.
Import File
Click Browse to locate the file to import.
Import
Begins the import process