v1.2.3 - (re)loading an inner workflow with links updates no longer disconnects all input links; they are now preserved when possible.

README.md

@@ -118,9 +118,9 @@ The modifier node takes an input value, passes it through to its output, and als
 
 ![Example workflow using Modifier Nodes](./assets/readme_modifier.png)
 
-## Manual Value Entry ![New](https://img.shields.io/badge/NEW-green)
+## User Value Entry ![New](https://img.shields.io/badge/NEW-green)
 
-For `Subworkflow Input` nodes with primitive number types, you can now set their value directly in the `Subworkflow` node without needing to link a separate primitive number node. 
+For `Subworkflow Input` nodes with primitive number types, users can now set the value directly in the `Subworkflow` node without a link to separate node. 
 This allows for more compact workflows when you simply want to set a number for the inner workflow.
 When an node is linked to the input of such a node, the linked node value will take precedence over the set value.
 The value input can also be disabled; the linked input of the inner input will use as fallback value. 
@@ -182,9 +182,10 @@ ComfyUI workflow JSON appears in a few different shapes depending on how it was
 
 ### Version History
 
+- v1.2.3 - (re)loading an inner workflow with links updates no longer disconnects all input links; they are now preserved when possible.
 - v1.2.2 - Fixed a bug where inner node validation exception were raised due to removal of initial static output slots. 
 - v1.2.1 - Removed the maximum number of inputs and outputs on the `Subworkflow` node (was previously set to 8).
-- v1.2.0 - Added manual value entry for primitive `Subworkflow Input` input nodes on the `Subworkflow` node. Check README features section for details.
+- v1.2.0 - Added value entry for primitive `Subworkflow Input` input nodes directly on the `Subworkflow` node. Check README features section for details.
 - v1.1.0 - Added `Subworkflow Modifier`, `Subworkflow Modifier Source` (+ from URL) nodes. Combining these nodes in inner and outer workflows allows for circular links between an inner workflow input and output, without circular reference problems. 
 - v1.0.1 - UI only nodes are now supported in inner workflows, no longer raising and error when loading.
 - v1.0.0 - Initial release of the four custom nodes and workflow loading and execution behavior.

js/subworkflow.js

@@ -528,8 +528,29 @@ function applyWorkflowInfoOnLoad(node, info, savedInputCount, savedSize, config,
         // Override widgets are not yet present even on the fast path — add them now.
         _syncOverrideWidgets(node, inputs, config, pendingOverrideValues);
     } else {
-        debugLog(`applyWorkflowInfoOnLoad: input count changed (${savedInputCount}->${inputs.length}), full refresh`);
-        updateInputSlots(node, inputs);
+        debugLog(`applyWorkflowInfoOnLoad: input count changed (${savedInputCount}->${inputs.length}), smart update`);
+        // Update existing slots in-place to preserve links, then add/remove only what changed.
+        let idx = 0;
+        for (const inp of (node.inputs || [])) {
+            if (inp.name?.startsWith("swf_in_") && idx < inputs.length) {
+                inp.label = inputs[idx].slot_name;
+                inp.type = swfSlotType(inputs[idx]);
+                idx++;
+            }
+        }
+        if (inputs.length > savedInputCount) {
+            for (let i = savedInputCount; i < inputs.length; i++) {
+                node.addInput(`swf_in_${i}`, swfSlotType(inputs[i]), { label: inputs[i].slot_name });
+            }
+        } else {
+            if (node.inputs) {
+                for (let i = node.inputs.length - 1; i >= 0; i--) {
+                    const nm = node.inputs[i].name;
+                    if (!nm?.startsWith("swf_in_")) continue;
+                    if (parseInt(nm.slice(7)) >= inputs.length) node.removeInput(i);
+                }
+            }
+        }
         _syncOverrideWidgets(node, inputs, config, pendingOverrideValues);
     }
 

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "comfyui-subworkflow"
-version = "1.2.2"
+version = "1.2.3"
 description = "Use ComfyUI workflows as reusable subworkflows via Subworkflow Input, Subworkflow Output, and Subworkflow nodes"
 license = { file = "LICENSE" }
 requires-python = ">=3.10"