Peering issue - Possible Juniper to Cisco issue

To all, I (ASR1001) had an experience recently where the Telco (Juniper) told me that I was sending them 1000+ routes when I attempted to re-establish a BGP session; subsequently they would not allow this and they refused the session. I had no sync on and a prefix list so I was advertising only one route. Even though I hard reset the session on my end the Telco for some reason kept seeing me send the routes. I finally called them and had them reset their end and the session came up right away. What the ... thx Philip