issue in editing the analysis which has developed by Logical SQL

Summary

Invalid SQL Identifier: "Workforce Management - Worker Assignment Event Real Time" . Issued SQL: .

Content

In requirement i have to use logical SQL ,So when i run the analysis after Logical SQL applied its working i can edit also.But if i once close the analysis i am not able edit the analysis.Its giving error

'Invalid SQL Identifier: "Workforce Management - Worker Assignment Event Real Time" 
Issued SQL: .'

 

please help me to resolve this and how can i edit the analysis

Thanks in Advance.