Using Maximo 7.5.0.5, Go To > Integration > External Systems
In External Systems, pick your system that you want to filter records for
Go to the Publish Channels tab
Click on Data Export
In the Export Condition field, enter your where clause to filter your record set

I referenced these steps from IBM Help:
http://publib.boulder.ibm.com/infocenter/tivihelp/v27r1/index.jsp?topic=%2Fcom.ibm.itam.doc%2Fmigrating%2Ft_asset_disposal_export_data.html
Normally, I just reference the link. In my experience though, IBM's web site frequently changes URL structure and occasionally goes offline for "maintenance". For accessibility, I am including the text here. No offense to copyright.
Exporting asset disposal data
To provide information for review or for a company that you hire to dispose of assets, you can use the integration framework applications to export a data file with information about assets that you are planning to dispose of.
Before you begin
Before you attempt to export a file, check that the following tasks are completed:
- JMS queues are configured. You can use either continuous queue or sequential queue, depending on your business process.
- The external system for asset disposal integration is enabled.
- The publish channel is enabled.
About this task
The following procedure explains how to export asset disposal data.
Procedure
1) On the navigation bar, click Go To > Integration > External Systems.
2) On the List tab, select the TAMITEXTSYS external system.
3) On the Publish Channels tab of the External Systems application, select the ITASSETDISPOSAL publish channel and click Data Export.
4) In the Export Condition field in the Data Export window, enter an SQL statement that is appropriate for the Maximo® database that you use. This statement specifies the export condition.
Typically conditions filter by location, by site ID, and by status, as shown in the following example.
location = 'DISPOSAL' and siteid = 'BEDFORD' and status not in ('DECOMMISSIONED','DISPOSED')
The SQL statement must use the database names for attributes as shown in the field help. To view the field help, position the cursor in a field and press Alt+F1. The field help displays the database table and column (attribute) in the following format: ASSET.SITEID, where SITEID is the attribute name.
5) Click OK to export the asset data.
What to do next
The location to which the file is exported depends on the global directory set for the system and on the filedir parameter for the endpoint of the external system. If no global directory is set, look in the root of the application server folder. If no filedir parameter is set for the external system, look in the 'flatfiles' sub-directory. For example,
C:\bea\user_projects\domains\maximo_database\flatfiles\TAMITEXTSYS_ITASSETDISPOSALInterface_1236264695765361846.dat
Another way to locate the file is to search the operating system file structure for TAMITEXTSYS_ITASSETDISPOSALInterface*.dat.