REST API Import failed with the legacy key/ keyAlias=deprecatedImportExportEncSecret with error " Import failed: com.jaspersoft.jasperserver.export.service.ImportFailedException: import.decode.failed"

Error:

REST API Import failed with the legacy key/ keyAlias=deprecatedImportExportEncSecret with error " Import failed: com.jaspersoft.jasperserver.export.service.ImportFailedException: import.decode.failed"

Resolution:

The root cause of the issue due to keyAlias option is case-sensitive. Actually, it is a documentation defect as it marked the export and import option 
as keyalias so, that's why it is by default exporting the resource with the server key instead of the keyAlias we chose. So, kindly use capital A as keyAlias. 
We filed the documentation defect for this issue. Please find the post request and payload for the export and import.

Post request of export: http://localhost:8080/jasperserver-pro/rest_v2/export 

{
"keyAlias": "deprecatedImportExportEncSecret",
"parameters": ["everything"]
}

Post request of import:
http://localhost:8383/jasperserver-pro/rest_v2/import?keyAlias=deprecatedImportExportEncSecret 

Please follow the rest api documentation for more information: <https://docs.tibco.com/pub/js-jrs/8.2.0/doc/pdf/js-jrs_8.2.0_REST-API-Reference.pdf?id=11>