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				@@ -183,7 +183,7 @@ $(document).ready(function() { 
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				             return result; 
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				         } 
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				         updateFilingFileCount(filing, count) { 
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				-            let differ = count - filing.source_node.file_count; 
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				+            let differ = count - (filing.source_node.file_count || 0); 
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				             filing.source_node.file_count = count; 
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				             filing.source_node.total_file_count = count; 
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				             filing.name = filing.source_node.name + (filing.source_node.total_file_count > 0 ? `(${filing.source_node.total_file_count})` : ''); 
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