Develop in Disconected Mode

[Mictog]

Is it possible to develop (not run, not preview) a report in "disconnected mode"? 

I ask this as I am working on a report (cloning) that came with an application.  The Application Report writers make (IMHO) an excessive number of calls to external files for programming.  This causes a large memory leak to the point where iReports 5.6.0 is unresponsive and I have to close it, or force it closed.  After a reboot, I am ok again for a period of time.  What I would like to do is make my label changes and rewrite some of the external calls to simple data calls (allowing the work to be done in the SQL Server--ex.  Checking for null values, concantenation, etc.).

Thank you in advance.