Parking BLF - Disconnect

[elementpbx]

Anyone having this issue Asterisk 1.8

Using a T46G .170 release (most published recent) we have two Park BLF keys labeled on our DSS. So line 4 and 5 on T46 will be "parkpos_1" and "parkpos_2". When a call is answered at the phone and I push PARK 1 - (parkpos_1) it does Park the call and the key remains red. I go ahead and from the same phone push PARK 1 again to reconnect the call. This also works...BUT if I push PARK 1 again to RE-PARK the Call on the same line (parkpos_1) a second time it immediatley drop the call. This does not do this on my T38 and Yealink support said they cannot re-create this. Now if push Park 2 instead of Park 1 it will re-park. Its only when you do the sequence twoce in a row.