Apsona Grids cannot be exported the same way as other Apsona customizations.
They do not export using Tools → Export, and they are not stored as records in Apsona Items, so migrating them requires a different method.
To move Apsona Grids between orgs, the recommended process is:
In Apsona, build a report on the Apsona Grids object.
Make sure to include these fields:
Record ID
Grid Name
Object API Name
Grid Descriptor (this stores the full JSON grid configuration and is the key field required for migration)
Run the report and export the results as CSV.
Use a Salesforce data import tool (such as Data Loader) to insert the exported records into the target org.
Once the data is loaded into the new org, the grids will appear in Apsona with their structure and configuration preserved.
Note:
Grids must be migrated using Apsona Grids reports + Data Loader, because the JSON configuration lives in the Grid Descriptor, which is not handled when exporting through standard Apsona UI tools.