I am able to see the historical executed queries in the Execution Log of the VQL Shell when I open a new VQL Shell. The VQL Shell includes a “command log” that saves the last VQL statements run. Generally, when you open multiple VQL Shell and execute VQL query, the execution log will show only the queries executed in that particular VQL Shell along with historical queries but it does not get synchronized during run time.
For more details, you can refer to [Using the VQL Shell](https://community.denodo.com/docs/html/browse/7.0/vdp/administration/installation_and_execution/launching_the_virtual_dataport_administration_tool/using_the_vql_shell) of Virtual DataPort Administration Guide.
Additionally, if you still need help and if you are a user with a valid Support account, you may open a support case at the Denodo Support Site and the support team will help you.
Hope this helps!