diff --git a/index_5.1.html b/index_5.1.html
index 9041daa..84eec78 100644
--- a/index_5.1.html
+++ b/index_5.1.html
@@ -1947,7 +1947,7 @@
 											</div>
 										</div>
 										<div class="col-md-auto p-0 m-0 text-right text-success">
-											<button class="btn btn-sm removeCla text-success border rounded px-1 pb-0" style="z-index: 90">
+											<button class="btn btn-sm removeCla text-success border rounded px-1 pb-0" style="z-index: 90" id="removeClaxX3Xx">
 												<ion-icon name="close-circle"></ion-icon>
 											</button>
 										</div>
@@ -2008,7 +2008,7 @@
 										<div class="col-md-auto p-0 m-0 text-right text-success">
 											<button
 												class="btn btn-sm removeCla text-success border rounded px-1 pb-0"
-												style="z-index: 90">
+												style="z-index: 90" id="removeRifxR3Rx">
 												<ion-icon name="close-circle"></ion-icon>
 											</button>
 										</div>
diff --git a/js/script_5.1.js b/js/script_5.1.js
index e1f042b..1503100 100644
--- a/js/script_5.1.js
+++ b/js/script_5.1.js
@@ -408,6 +408,7 @@ $(document).ready(function() {
 			$(tabPanelId).attr("data-claActive", 0);
 			$(this).closest('li').find('.clatext').fadeTo( "slow", 0.6 );
 		}
+		refreshClaList();
 		refreshSortables();
     });
 	
@@ -1003,17 +1004,34 @@ $(document).ready(function() {
 		queryJson.Clausola0.contesto = JSON.stringify(window.context0);
 		queryJson.unitaRicerca = $("#unitaRicerca")[0].options[$("#unitaRicerca")[0].selectedIndex].value;
     	var claLiArray = $("#sortable0").find(".claLI");
+    	var countActCla = 0;
+    	var buttonID = "";
     	if ($(claLiArray).length) {
 			if ($("#li-cla0")[0]) {
-				$("#li-cla0")[0].remove();	
+				$("#li-cla0")[0].remove();
 			};
     		$(claLiArray).each(function(){
 				var claIdNum = $(this).attr('id').substr(6);
+				if ($(this).find(".claAct").prop('checked')) {
+					countActCla++;
+				}
 				updateClaListItem(claIdNum, "#sortable0");
 			});
 			if ($(claLiArray).length == 1) {
 				var remCla = claLiArray.find(".removeCla");
 				remCla.addClass("disabled");
+				var actCla = claLiArray.find(".claAct");
+				actCla.prop('disabled', true);
+			} else {
+				if ( countActCla == 1 ) {
+					claLiArray.find(".claAct").each(function(){
+						if ($(this).prop('checked')) {
+							$(this).prop('disabled', true);
+							buttonID = "removeCla" + $(this).attr('id').substr(9);
+							$('#'+buttonID).addClass("disabled");
+						}	
+					});
+				}
 			};
 		} else {
 			if (claListLen == 0 && condListLen == 0) {
@@ -1026,16 +1044,32 @@ $(document).ready(function() {
 		
 		var rifLiArray = $("#sortableRif0").find(".rifLI");
     	if ($(rifLiArray).length) {
+			countActCla = 0;
 			if ($("#li-rif0")[0]) {
 				$("#li-rif0")[0].remove();	
 			};
     		$(rifLiArray).each(function(){
 				var rifIdNum = $(this).attr('id').substr(6);
+				if ($(this).find(".claAct").prop('checked')) {
+					countActCla++;
+				}
 				updateRifListItem(rifIdNum, "#sortableRif0");
 			});
 			if ($(rifLiArray).length == 1) {
 				var remCla = rifLiArray.find(".removeCla");
 				remCla.addClass("disabled");
+				var actCla = rifLiArray.find(".claAct");
+				actCla.prop('disabled', true);
+			} else {
+				if ( countActCla == 1 ) {
+					rifLiArray.find(".claAct").each(function(){
+						if ($(this).prop('checked')) {
+							$(this).prop('disabled', true);
+							buttonID = "removeRif" + $(this).attr('id').substr(9);
+							$('#'+buttonID).addClass("disabled");
+						}	
+					});
+				}
 			};
 		} else {
 			if (rifLiArray == 0 && condListRifLen == 0) {
@@ -1076,33 +1110,38 @@ $(document).ready(function() {
 			checkInsert = ' checked="checked"';
 		};
 		var remCla = $("#" + rifListItemId).find(".removeCla");
-		if (remCla.hasClass("disabled")){
-			remCla.removeClass("disabled");					
+		if (remCla.hasClass("disabled")) {
+			remCla.removeClass("disabled");
 		}
-			rifSubParList.each(function(){
-				var claSubParType = $(this)[0].type;
-				if (claSubParType == "select-one") {
-					if (!($(this).prop("disabled"))) {
-						rifText = rifText  + $(this)[0].title + ': <span  class="font-italic">' + $(this)[0].options[$(this)[0].selectedIndex].text + '</span>; ';					
-					};
-       	  			jsonTextToParse = jsonTextToParse + ', "' + $(this)[0].id.replace(rifIdNum,"") + '": "' + $(this)[0].options[$(this)[0].selectedIndex].value + '"';
-       	  			if ($(this)[0].id.startsWith("Tipo_Riferimento")) {
-						if ($(this)[0][3].selected) {
-							$('#Tipo_Citazione'+rifIdNum)[0].removeAttribute("style");
-							$('#Tipo_Citazione'+rifIdNum).prop('disabled', false);							
-						} else {
-							$('#Tipo_Citazione'+rifIdNum)[0].selectedIndex = 0;
-							$('#Tipo_Citazione'+rifIdNum)[0].setAttribute("style", "opacity: 0.6;");
-							$('#Tipo_Citazione'+rifIdNum).prop('disabled', true);
-						}
-					};
+		var actCla = $("#" + rifListItemId).find(".claAct");
+		if (actCla.attr('disabled')) {
+			actCla.prop('disabled', false);
+		}
+
+		rifSubParList.each(function() {
+			var claSubParType = $(this)[0].type;
+			if (claSubParType == "select-one") {
+				if (!($(this).prop("disabled"))) {
+					rifText = rifText + $(this)[0].title + ': <span  class="font-italic">' + $(this)[0].options[$(this)[0].selectedIndex].text + '</span>; ';
 				};
-				if (claSubParType == "text" && $(this)[0].value) {
-					rifText = rifText + $(this)[0].name + ': <span  class="font-italic">"' + $(this)[0].value + '"</span>; ';
-       	  			jsonTextToParse = jsonTextToParse + ', "' + $(this)[0].id.replace(rifIdNum,"") + '": "' + $(this)[0].value + '"';
+				jsonTextToParse = jsonTextToParse + ', "' + $(this)[0].id.replace(rifIdNum, "") + '": "' + $(this)[0].options[$(this)[0].selectedIndex].value + '"';
+				if ($(this)[0].id.startsWith("Tipo_Riferimento")) {
+					if ($(this)[0][3].selected) {
+						$('#Tipo_Citazione' + rifIdNum)[0].removeAttribute("style");
+						$('#Tipo_Citazione' + rifIdNum).prop('disabled', false);
+					} else {
+						$('#Tipo_Citazione' + rifIdNum)[0].selectedIndex = 0;
+						$('#Tipo_Citazione' + rifIdNum)[0].setAttribute("style", "opacity: 0.6;");
+						$('#Tipo_Citazione' + rifIdNum).prop('disabled', true);
+					}
 				};
-			});
-		jsonTextToParse = jsonTextToParse.replace('{, ','{') + '}'
+			};
+			if (claSubParType == "text" && $(this)[0].value) {
+				rifText = rifText + $(this)[0].name + ': <span  class="font-italic">"' + $(this)[0].value + '"</span>; ';
+				jsonTextToParse = jsonTextToParse + ', "' + $(this)[0].id.replace(rifIdNum, "") + '": "' + $(this)[0].value + '"';
+			};
+		});
+		jsonTextToParse = jsonTextToParse.replace('{, ', '{') + '}'
    		if ($("#" + rifListItemId)[0]) {
 			$("#" + rifListItemId + " .clatext").replaceWith('<span class="small clatext">' + rifText + '<br>Contesto: <span  class="font-italic">' + contextText + '</span></span>');
    		} else {
@@ -1130,6 +1169,11 @@ $(document).ready(function() {
 				if (remCla.hasClass("disabled")){
 					remCla.removeClass("disabled");					
 				}
+				var actCla = $("#" + claListItemId).find(".claAct");
+				if (actCla.attr('disabled')) {
+					actCla.prop('disabled', false);
+				}
+
 				switch (claType) {
         	  		case "Clausola":
 						var l_f = $("form #lemma_forma" + claIdNum)[0].options[$("form #lemma_forma" + claIdNum)[0].selectedIndex].value;