diff --git a/NEWS b/NEWS
index f9688def0ce9..d43ad7f2610e 100644
--- a/NEWS
+++ b/NEWS
@@ -3,6 +3,12 @@ For full details, see the git log at: https://github.com/ksh93/ksh
 
 Any uppercase BUG_* names are modernish shell bug IDs.
 
+2020-10-21:
+
+- Fixed: More concisely correct the exporting of uppercase and lowercase
+  variables when only the export and change case attributes were applied.
+  This fix improves upon the previous 2020-09-30 modifications.
+
 2020-10-06:
 
 - The security of virtual/non-forking subshells that locally change the present
diff --git a/src/cmd/ksh93/bltins/typeset.c b/src/cmd/ksh93/bltins/typeset.c
index eca594f462aa..280b994bb590 100644
--- a/src/cmd/ksh93/bltins/typeset.c
+++ b/src/cmd/ksh93/bltins/typeset.c
@@ -94,7 +94,6 @@ int    b_readonly(int argc,char *argv[],Shbltin_t *context)
 	memset((void*)&tdata,0,sizeof(tdata));
 	tdata.sh = context->shp;
 	tdata.aflag = '-';
-	tdata.argnum = -1;  /* tell nv_newattr() that we should not change size */
 	while((flag = optget(argv,*command=='e'?sh_optexport:sh_optreadonly))) switch(flag)
 	{
 		case 'p':
diff --git a/src/cmd/ksh93/include/version.h b/src/cmd/ksh93/include/version.h
index 10bb1cec524d..1f4f74c00b61 100644
--- a/src/cmd/ksh93/include/version.h
+++ b/src/cmd/ksh93/include/version.h
@@ -17,4 +17,4 @@
 *                  David Korn <dgk@research.att.com>                   *
 *                                                                      *
 ***********************************************************************/
-#define SH_RELEASE	"93u+m 2020-10-06"
+#define SH_RELEASE	"93u+m 2020-10-21"
diff --git a/src/cmd/ksh93/sh/name.c b/src/cmd/ksh93/sh/name.c
index 11d87338b7e1..74f6cd6cc5e4 100644
--- a/src/cmd/ksh93/sh/name.c
+++ b/src/cmd/ksh93/sh/name.c
@@ -2938,28 +2938,29 @@ void nv_newattr (register Namval_t *np, unsigned newatts, int size)
 		errormsg(SH_DICT,ERROR_exit(1),e_restricted,nv_name(np));
 	/* handle attributes that do not change data separately */
 	n = np->nvflag;
-	trans = !(n&NV_INTEGER) && (n&(NV_LTOU|NV_UTOL));
+	trans = !(n&NV_INTEGER) && (n&(NV_LTOU|NV_UTOL)); /* transcode to lower or upper case */
 	if(newatts&NV_EXPORT)
 		nv_offattr(np,NV_IMPORT);
-	if(((n^newatts)&NV_EXPORT))
+	if(((n^newatts)&NV_EXPORT)) /* EXPORT attribute has been toggled */
 	{
 		/* record changes to the environment */
-		if(n&NV_EXPORT)
+		if(n&NV_EXPORT) 
 		{
+			/* EXPORT exists on old attributes therefore not on new */
 			nv_offattr(np,NV_EXPORT);
 			env_delete(shp->env,nv_name(np));
 		}
 		else
-		{
+		{ 
+			/* EXPORT is now turned on for new attributes */
 			nv_onattr(np,NV_EXPORT);
 			sh_envput(shp->env,np);
 		}
-		if((n^newatts)==NV_EXPORT && size==-1)
+		if((n^newatts)==NV_EXPORT && !trans)
+			/* Only EXPORT attribute has changed and thus all work has been done. */
 			return;
 	}
 	oldsize = nv_size(np);
-	if(size==-1)
-		size = oldsize;
 	if((size==oldsize|| (n&NV_INTEGER)) && !trans && ((n^newatts)&~NV_NOCHANGE)==0)
 	{
 		if(size)