Dashboard reports are unique to the system. You can try to migrate but won't be an easy process.

After moving the reports from A to b, run the procedure below:

1) Stop the NIC Webserver Service

2) Stop the NIC Scheduler Service

3) cd to %_ENVISION%\database\cmd (or in 3.3.x e:\envision\database\cmd\)

4) run startisql.cmd

5) type: delete from schedulerevents where type like '%Dashboard%'

6) Hit F5

7) Close the isql GUI

8) Start the NIC Scheduler Service and the NIC Webserver