diff --git a/IO/AMR/vtkAMRBaseReader.cxx b/IO/AMR/vtkAMRBaseReader.cxx
index cb4a9d589a4f809e46d51f2e7da80826408c7d23..1596848a0d20c126f201aab17523e138cdd4d145 100644
--- a/IO/AMR/vtkAMRBaseReader.cxx
+++ b/IO/AMR/vtkAMRBaseReader.cxx
@@ -251,7 +251,14 @@ int vtkAMRBaseReader::RequestInformation(
 
   this->Superclass::RequestInformation( rqst, inputVector, outputVector );
 
-  this->Metadata = vtkOverlappingAMR::New();
+  if (this->Metadata == nullptr)
+  {
+    this->Metadata = vtkOverlappingAMR::New();
+  }
+  else
+  {
+    this->Metadata->Initialize();
+  }
   this->FillMetaData( );
   vtkInformation* info = outputVector->GetInformationObject(0);
   assert( "pre: output information object is nullptr" && (info != nullptr) );
diff --git a/IO/AMR/vtkAMReXGridReaderInternal.cxx b/IO/AMR/vtkAMReXGridReaderInternal.cxx
index c88dd1f73014e715b949e7908554411537eadb29..1a367685a30ae41c99b437ff83e24da9e3fdb73d 100644
--- a/IO/AMR/vtkAMReXGridReaderInternal.cxx
+++ b/IO/AMR/vtkAMReXGridReaderInternal.cxx
@@ -1072,7 +1072,7 @@ int vtkAMReXGridReaderInternal::ReadBoxArray(std::istream& is, int* boxArray, in
     is >> c; // read '('
     for (int ee = 0; ee < this->Header->dim; ++ee)
     {
-      is >> boxArray[3 * dd + ee];
+      is >> boxArray[this->Header->dim * dd + ee];
       if (ee < (this->Header->dim - 1))
       {
         is >> c; // read ','
@@ -1091,7 +1091,7 @@ int vtkAMReXGridReaderInternal::ReadBoxArray(std::istream& is, int* boxArray, in
   int numberOfPoints = 1;
   for (int i = 0; i < this->Header->dim; ++i)
   {
-    boxArrayDim[i] = ((boxArray[3 * 1 + i] - boxArray[3 * 0 + i]) + 1);
+    boxArrayDim[i] = ((boxArray[this->Header->dim * 1 + i] - boxArray[this->Header->dim * 0 + i]) + 1);
     numberOfPoints *= boxArrayDim[i];
   }
   if (debugReader)
@@ -1105,7 +1105,7 @@ void vtkAMReXGridReaderInternal::PrintBoxArray(int* boxArray)
   std::cout << "(";
   for (int space = 0; space < this->Header->dim; ++space)
   {
-    std::cout << boxArray[0 * 3 + space];
+    std::cout << boxArray[0 * this->Header->dim + space];
     if (space < (this->Header->dim - 1))
       std::cout << ",";
   }
@@ -1113,7 +1113,7 @@ void vtkAMReXGridReaderInternal::PrintBoxArray(int* boxArray)
   std::cout << "(";
   for (int space = 0; space < this->Header->dim; ++space)
   {
-    std::cout << boxArray[1 * 3 + space];
+    std::cout << boxArray[1 * this->Header->dim + space];
     if (space < (this->Header->dim - 1))
       std::cout << ",";
   }
@@ -1121,7 +1121,7 @@ void vtkAMReXGridReaderInternal::PrintBoxArray(int* boxArray)
   std::cout << "(";
   for (int space = 0; space < this->Header->dim; ++space)
   {
-    std::cout << boxArray[2 * 3 + space];
+    std::cout << boxArray[2 * this->Header->dim + space];
     if (space < (this->Header->dim - 1))
       std::cout << ",";
   }