diff --git a/all.sas b/all.sas
index c935ab8..4c262e7 100644
--- a/all.sas
+++ b/all.sas
@@ -95,6 +95,37 @@ options noquotelenmax;
 %mend mf_dedup;
 
 
+/**
+  @file
+  @brief Deletes a physical file, if it exists
+  @details Usage:
+
+      %mf_writefile(&sasjswork/myfile.txt,l1=some content)
+
+      %mf_deletefile(&sasjswork/myfile.txt)
+
+      %mf_deletefile(&sasjswork/myfile.txt)
+
+
+  @param filepath Full path to the target file
+
+  @returns The return code from the fdelete() invocation
+
+  <h4> Related Macros </h4>
+  @li mf_deletefile.test.sas
+  @li mf_writefile.sas
+
+  @version 9.2
+  @author Allan Bowe
+**/
+
+%macro mf_deletefile(file
+)/*/STORE SOURCE*/;
+  %local rc fref;
+  %let rc= %sysfunc(filename(fref,&file));
+  %if %sysfunc(fdelete(&fref)) ne 0 %then %put %sysfunc(sysmsg());
+  %let rc= %sysfunc(filename(fref));
+%mend mf_deletefile;
 /**
   @file mf_existds.sas
   @brief Checks whether a dataset OR a view exists.
@@ -17781,7 +17812,7 @@ filename __shake clear;
 %let platform_object_path=%mf_loc(POF);
 %let ds=%mf_getuniquename(prefix=spkexportable);
 
-%mm_tree(root=%str(&metaloc) ,types=EXPORTABLE ,outds=&ds)
+%mm_tree(root=%str(&metaloc),types=EXPORTABLE ,outds=&ds)
 
 %if %mf_isblank(&outref)=1 %then %let outref=%mf_getuniquefileref();
 
@@ -17790,19 +17821,27 @@ data _null_;
   file &outref lrecl=32767;
   length str $32767;
   if _n_=1 then do;
+    put "# Script generated by &sysuserid on %sysfunc(datetime(),datetime19.)";
     put "cd ""&platform_object_path"" \";
     put "; ./ExportPackage -host &host -port &port -user &mmxuser \";
-    put "  -disableX11 -password &mmxpass \"
+    put "  -disableX11 -password &mmxpass \";
     put "  -package ""&cmdoutloc/&cmdoutname..spk"" \";
   end;
 /* exclude particular patterns from the exported SPK */
 %if "&excludevars" ne "0" %then %do;
-  /* ignore top level folder else all subcontent will be exported regardless */
-  if _n_>1;
   %do i=1 %to %sysfunc(countw(&excludevars));
     %let var=%scan(&excludevars,&i);
-    if index(path,symget("&var")) ne 0;
+    if _n_=1 then do;
+      length excludestr&i $1000;
+      retain excludestr&i;
+      excludestr&i=symget("&var");
+      putlog excludestr&i=;
+      putlog path=;
+    end;
+    if index(path,cats(excludestr&i))=0 and index(name,cats(excludestr&i))=0;
   %end;
+  /* ignore top level folder else all subcontent will be exported regardless */
+  if _n_>1;
 %end;
   str=' -objects '!!cats('"',path,'/',name,"(",publictype,')" \');
   put str;
diff --git a/base/mf_deletefile.sas b/base/mf_deletefile.sas
new file mode 100644
index 0000000..355a581
--- /dev/null
+++ b/base/mf_deletefile.sas
@@ -0,0 +1,31 @@
+/**
+  @file
+  @brief Deletes a physical file, if it exists
+  @details Usage:
+
+      %mf_writefile(&sasjswork/myfile.txt,l1=some content)
+
+      %mf_deletefile(&sasjswork/myfile.txt)
+
+      %mf_deletefile(&sasjswork/myfile.txt)
+
+
+  @param filepath Full path to the target file
+
+  @returns The return code from the fdelete() invocation
+
+  <h4> Related Macros </h4>
+  @li mf_deletefile.test.sas
+  @li mf_writefile.sas
+
+  @version 9.2
+  @author Allan Bowe
+**/
+
+%macro mf_deletefile(file
+)/*/STORE SOURCE*/;
+  %local rc fref;
+  %let rc= %sysfunc(filename(fref,&file));
+  %if %sysfunc(fdelete(&fref)) ne 0 %then %put %sysfunc(sysmsg());
+  %let rc= %sysfunc(filename(fref));
+%mend mf_deletefile;
diff --git a/meta/mm_spkexport.sas b/meta/mm_spkexport.sas
index 7eea1e3..f5d0b2b 100644
--- a/meta/mm_spkexport.sas
+++ b/meta/mm_spkexport.sas
@@ -102,7 +102,7 @@
 %let platform_object_path=%mf_loc(POF);
 %let ds=%mf_getuniquename(prefix=spkexportable);
 
-%mm_tree(root=%str(&metaloc) ,types=EXPORTABLE ,outds=&ds)
+%mm_tree(root=%str(&metaloc),types=EXPORTABLE ,outds=&ds)
 
 %if %mf_isblank(&outref)=1 %then %let outref=%mf_getuniquefileref();
 
@@ -111,19 +111,27 @@ data _null_;
   file &outref lrecl=32767;
   length str $32767;
   if _n_=1 then do;
+    put "# Script generated by &sysuserid on %sysfunc(datetime(),datetime19.)";
     put "cd ""&platform_object_path"" \";
     put "; ./ExportPackage -host &host -port &port -user &mmxuser \";
-    put "  -disableX11 -password &mmxpass \"
+    put "  -disableX11 -password &mmxpass \";
     put "  -package ""&cmdoutloc/&cmdoutname..spk"" \";
   end;
 /* exclude particular patterns from the exported SPK */
 %if "&excludevars" ne "0" %then %do;
-  /* ignore top level folder else all subcontent will be exported regardless */
-  if _n_>1;
   %do i=1 %to %sysfunc(countw(&excludevars));
     %let var=%scan(&excludevars,&i);
-    if index(path,symget("&var")) ne 0;
+    if _n_=1 then do;
+      length excludestr&i $1000;
+      retain excludestr&i;
+      excludestr&i=symget("&var");
+      putlog excludestr&i=;
+      putlog path=;
+    end;
+    if index(path,cats(excludestr&i))=0 and index(name,cats(excludestr&i))=0;
   %end;
+  /* ignore top level folder else all subcontent will be exported regardless */
+  if _n_>1;
 %end;
   str=' -objects '!!cats('"',path,'/',name,"(",publictype,')" \');
   put str;
diff --git a/tests/crossplatform/mf_deletefile.test.sas b/tests/crossplatform/mf_deletefile.test.sas
new file mode 100644
index 0000000..29eb114
--- /dev/null
+++ b/tests/crossplatform/mf_deletefile.test.sas
@@ -0,0 +1,28 @@
+/**
+  @file
+  @brief Testing mf_deletefile.sas macro
+
+  <h4> SAS Macros </h4>
+  @li mf_deletefile.sas
+  @li mp_assert.sas
+  @li mp_assertscope.sas
+
+**/
+
+%let test1file=&sasjswork/myfile1.txt;
+
+%mf_writefile(&test1file,l1=some content)
+
+%mp_assert(
+  iftrue=(%sysfunc(fileexist(&test1file))=1),
+  desc=Check &test1file exists
+)
+
+%mp_assertscope(SNAPSHOT)
+%mf_deletefile(&test1file)
+%mp_assertscope(COMPARE)
+
+%mp_assert(
+  iftrue=(%sysfunc(fileexist(&test1file))=0),
+  desc=Check &test1file no longer exists
+)