Using a tiered fallback is safer in case there is another data-loss and ids get reset.

src/NzbDrone.Core/Indexers/BroadcastheNet/BroadcastheNetRequestGenerator.cs

@@ -25,18 +25,18 @@ namespace NzbDrone.Core.Indexers.BroadcastheNet
         {
             var pageableRequests = new IndexerPageableRequestChain();
 
-            var parameters = new BroadcastheNetTorrentQuery();
-
             if (LastRecentTorrentID.HasValue)
             {
-                parameters.Id = ">=" + (LastRecentTorrentID.Value - 100);
-            }
-            else
+                pageableRequests.Add(GetPagedRequests(MaxPages, new BroadcastheNetTorrentQuery()
                 {
-                parameters.Age = "<=86400";
+                    Id = ">=" + (LastRecentTorrentID.Value - 100)
+                }));
             }
             
-            pageableRequests.Add(GetPagedRequests(MaxPages, parameters));
+            pageableRequests.AddTier(GetPagedRequests(MaxPages, new BroadcastheNetTorrentQuery()
+            {
+                Age = "<=86400"
+            }));
 
             return pageableRequests;
         }