--- a/NEWS	Tue Jan 22 12:55:41 2019 +0100
+++ b/NEWS	Wed Jan 23 09:32:59 2019 +0100
@@ -2,6 +2,7 @@
 ===============================
 
 * Fix compatibility with DICOMweb plugin (allow multipart answers over HTTP Keep-Alive)
+* Fix issue #128 (Asynchronous C-MOVE: invalid number of remaining sub-operations)
 
 
 Version 1.5.2 (2019-01-18)

--- a/OrthancServer/OrthancMoveRequestHandler.cpp	Tue Jan 22 12:55:41 2019 +0100
+++ b/OrthancServer/OrthancMoveRequestHandler.cpp	Wed Jan 23 09:32:59 2019 +0100
@@ -125,6 +125,7 @@
       ServerContext&                        context_;
       std::auto_ptr<DicomModalityStoreJob>  job_;
       size_t                                position_;
+      size_t                                countInstances_;
       
     public:
       AsynchronousMove(ServerContext& context,
@@ -156,6 +157,8 @@
         std::list<std::string> tmp;
         context_.GetIndex().GetChildInstances(tmp, publicId);
 
+        countInstances_ = tmp.size();
+
         job_->Reserve(tmp.size());
 
         for (std::list<std::string>::iterator it = tmp.begin(); it != tmp.end(); ++it)
@@ -166,20 +169,23 @@
 
       virtual unsigned int GetSubOperationCount() const
       {
-        return 1;
+        return countInstances_;
       }
 
       virtual Status DoNext()
       {
+        if (position_ >= countInstances_)
+        {
+          return Status_Failure;
+        }
+        
         if (position_ == 0)
         {
           context_.GetJobsEngine().GetRegistry().Submit(job_.release(), 0 /* priority */);
-          return Status_Success;
         }
-        else
-        {
-          return Status_Failure;
-        }
+        
+        position_ ++;
+        return Status_Success;
       }
     };
   }