Clear seen on boot and everyday

src/init.cpp

@@ -1442,6 +1442,7 @@ bool AppInit2(boost::thread_group& threadGroup)
 
     //flag our cached items so we send them to our peers
     budget.ResetSync();
+    budget.ClearSeen();
 
 
     uiInterface.InitMessage(_("Loading masternode payment cache..."));

src/masternode-budget.cpp

@@ -785,7 +785,10 @@ void CBudgetManager::NewBlock()
     // incremental sync with our peers
     if(masternodeSync.IsSynced()){
         LogPrintf("CBudgetManager::NewBlock - incremental sync started");
-        if(chainActive.Height() % 600 == rand() % 600) ResetSync();
+        if(chainActive.Height() % 600 == rand() % 600) {
+            ClearSeen();
+            ResetSync();
+        }
 
         LOCK(cs_vNodes);
         BOOST_FOREACH(CNode* pnode, vNodes)

src/masternode-budget.h

@@ -102,6 +102,13 @@ public:
         mapFinalizedBudgets.clear();
     }
 
+    void ClearSeen() {
+        mapSeenMasternodeBudgetProposals.clear();
+        mapSeenMasternodeBudgetVotes.clear();
+        mapSeenFinalizedBudgets.clear();
+        mapSeenFinalizedBudgetVotes.clear();
+    }
+
     int sizeFinalized() {return (int)mapFinalizedBudgets.size();}
     int sizeProposals() {return (int)mapProposals.size();}