Export support for a report with One.MultiColumnTreePlugin?

Platform framework adds paging params by default to the query for the handlers extending BaseReportHandler

But in a report having One.MultiColumnTreePlugin, you are supposed to explicitly add the paging params which is will cause export to fail becuase export handler is not setting the paging param values.

Solution is your custom handler should extend com.transcendsys.platform.server.report.CustomPagingAndSortingReportHandler instead of BaseReportHandler.