You'll want to apply the following diff to rel10

--- 53c7,8xx.scr	1995/07/24 07:23:44	1.13
+++ 53c7,8xx.scr	1995/07/24 09:05:33
@@ -1154,7 +1141,7 @@
 						;	unsuccessful dsa_next,
 						;	starting with 
 						;       dsa_reconnect_head
-    CLEAR ACK					; Accept last message
+    ; We used to CLEAR ACK here.
 #if 0
     INT int_debug_reselected_ok
 #endif