Increasing the search limit to over 10,000 is not possible. (4381219)

I need to find and export approximately 80,000 objects using the advanced search. I am unable to increase the search limit to more than 10,000; it keeps reverting back to 10,000.

Because of the performance issues we have limitation in Maximum search results in advanced search.

The mentioned limit can be extended manually using the following config key:

1. Close Archive Manager app
2. Create backup of original file "C:\Program Files (x86)\Quest\MAM4Exchange\Applications\EnterpriseManager\PamEnterpriseMan.exe.config"
3. Edit the file   
4. Add the following key <add key="MaxNumberOfResultsLimit" value="100000" />
5. Restart the MAM Manager service and reopen the Archive Manager app
6. Perform the Advanced Search again

Note:  The feature has been implemented in AM for Exchange version 8.9 CU7 also [work item 549866]