failsafe empty files

rules/AMR/Phage.smk

@@ -41,9 +41,9 @@ rule aggregate_VirSorter:
         """
         if [ -s {output} ]
         then
-            mv {input} {output}
+           cp scripts/virsorter_headers.csv {output}
         else
-            cp scripts/virsorter_headers.csv {output}
+            mv {input} {output}
         fi
         """