[CMT8.4.1.201211]After delete sqls, click sql table, it will pop error.

1 Goto step3, import some sqls, it will display the sqls on the left tree.click all the sql tables.
2 then delete all the sqls.

Q1:
Click the sql on left tree, it will pop error. please see the attachment.
Suggest after delete, it can refresh left tree.

Q2:
After delete sql, then migrate other sql, it sqlid is same as source sql,click sql table on left tree, the table hasn't been changed.