Even Teiid instance is running, user still needs to click "start the server" button to establish a connection with a teiid instance

Description of problem:
Even Teiid instance is running, user still needs to click "start the server" button to establish a connection with a teiid instance. Without an establishment, "test administration connection" nor "test JDBC connection" is failed.

Version-Release number of selected component (if applicable):
JBDS 7.1.1.GA with Teiid Designer 8.3.2.Final-v20140328-2123-B54

Steps to Reproduce:
1: Start JBoss DV 6.0.0
2: Start JBDS 7.1.1.GA
3: Switch to Teiid Designer perspective
4: On the "Default Teiid Instance" panel located at left side of window, click "mm://127.0.0.1:9999"
5: On the Overview tab located at center of window, mark the check box with the text label "Server is externally managed. Assume server is started.", and save it
6: Switch to "Teiid Instance" tab
7: Click "Test Administration Connection" or "Test JDBC Connection"

Actual results:
"Unable to establish connection to server "mm://127.0.0.1:9999:admin(JDV 6.0.0)"" label is displayed.

Expected results:
"OK" label is displayed

Additional info:
I monitored packet using wireshark, and it looks JBDS didn't send any packet to a teiid instance.