Support linking converted inputs from api json

web/extensions/core/widgetInputs.js

@@ -260,6 +260,12 @@ app.registerExtension({
 	async beforeRegisterNodeDef(nodeType, nodeData, app) {
 		// Add menu options to conver to/from widgets
 		const origGetExtraMenuOptions = nodeType.prototype.getExtraMenuOptions;
+		nodeType.prototype.convertWidgetToInput = function (widget) {
+			const config = getConfig.call(this, widget.name) ?? [widget.type, widget.options || {}];
+			if (!isConvertableWidget(widget, config)) return false;
+			convertToInput(this, widget, config);
+			return true;
+		};
 		nodeType.prototype.getExtraMenuOptions = function (_, options) {
 			const r = origGetExtraMenuOptions ? origGetExtraMenuOptions.apply(this, arguments) : undefined;
 

web/scripts/app.js

@@ -2162,8 +2162,17 @@ export class ComfyApp {
 				if (value instanceof Array) {
 					const [fromId, fromSlot] = value;
 					const fromNode = app.graph.getNodeById(fromId);
-					const toSlot = node.inputs?.findIndex((inp) => inp.name === input);
-					if (toSlot !== -1) {
+					let toSlot = node.inputs?.findIndex((inp) => inp.name === input);
+					if (toSlot == null || toSlot === -1) {
+						try {
+							// Target has no matching input, most likely a converted widget
+							const widget = node.widgets?.find((w) => w.name === input);
+							if (widget && node.convertWidgetToInput?.(widget)) {
+								toSlot = node.inputs?.length - 1;
+							}
+						} catch (error) {}
+					}
+					if (toSlot != null || toSlot !== -1) {
 						fromNode.connect(fromSlot, node, toSlot);
 					}
 				} else {