diff --git a/src/processors/BaseProcessor.cpp b/src/processors/BaseProcessor.cpp
index ebf4bdac..726d05a4 100644
--- a/src/processors/BaseProcessor.cpp
+++ b/src/processors/BaseProcessor.cpp
@@ -1,6 +1,7 @@
 #include "BaseProcessor.h"
 #include "gui/pedalboard/editors/ProcessorEditor.h"
 #include "netlist_helpers/NetlistViewer.h"
+#include "state/ParamForwardManager.h"
 
 BaseProcessor::BaseProcessor (const String& name,
                               ParamLayout params,
@@ -139,7 +140,7 @@ std::unique_ptr<XmlElement> BaseProcessor::toXML()
 
     xml->setAttribute ("x_pos", (double) editorPosition.x);
     xml->setAttribute ("y_pos", (double) editorPosition.y);
-    xml->setAttribute ("forwarding_params_slot_index", forwardingParamsSlotIndex);
+    xml->setAttribute (chowdsp::toString (ParamForwardManager::processorSlotIndexTag), forwardingParamsSlotIndex);
 
     if (netlistCircuitQuantities != nullptr)
     {
@@ -164,7 +165,7 @@ void BaseProcessor::fromXML (XmlElement* xml, const chowdsp::Version&, bool load
 
     vts.state = ValueTree::fromXml (*xml); // don't use `replaceState()` otherwise UndoManager will clear
 
-    forwardingParamsSlotIndex = xml->getIntAttribute ("forwarding_params_slot_index", -1);
+    forwardingParamsSlotIndex = xml->getIntAttribute (chowdsp::toString (ParamForwardManager::processorSlotIndexTag), -1);
 
     if (loadPosition)
         loadPositionInfoFromXML (xml);
diff --git a/src/processors/chain/ProcessorChainStateHelper.cpp b/src/processors/chain/ProcessorChainStateHelper.cpp
index 38c3de4e..9a1bb603 100644
--- a/src/processors/chain/ProcessorChainStateHelper.cpp
+++ b/src/processors/chain/ProcessorChainStateHelper.cpp
@@ -74,14 +74,17 @@ void ProcessorChainStateHelper::loadProcChain (const XmlElement* xml,
         });
 }
 
-std::unique_ptr<XmlElement> ProcessorChainStateHelper::saveProcChain()
+std::unique_ptr<XmlElement> ProcessorChainStateHelper::saveProcChain (bool savingPreset)
 {
     auto xml = std::make_unique<XmlElement> (procChainStateTag);
 
     auto saveProcessor = [&] (BaseProcessor* proc)
     {
         auto procXml = std::make_unique<XmlElement> (ChainStateHelperFuncs::getProcessorTagName (proc));
-        procXml->addChildElement (proc->toXML().release());
+        auto procParamsXml = proc->toXML();
+        if (savingPreset)
+            procParamsXml->removeAttribute (chowdsp::toString (ParamForwardManager::processorSlotIndexTag));
+        procXml->addChildElement (procParamsXml.release());
 
         for (int portIdx = 0; portIdx < proc->getNumOutputs(); ++portIdx)
         {
diff --git a/src/processors/chain/ProcessorChainStateHelper.h b/src/processors/chain/ProcessorChainStateHelper.h
index 6865f745..ae1ba5f2 100644
--- a/src/processors/chain/ProcessorChainStateHelper.h
+++ b/src/processors/chain/ProcessorChainStateHelper.h
@@ -7,7 +7,7 @@ class ProcessorChainStateHelper
 public:
     ProcessorChainStateHelper (ProcessorChain& thisChain, chowdsp::DeferredAction& deferredAction);
 
-    std::unique_ptr<XmlElement> saveProcChain();
+    std::unique_ptr<XmlElement> saveProcChain (bool savingPreset = false);
     void loadProcChain (const XmlElement* xml,
                         const chowdsp::Version& stateVersion,
                         bool loadingPreset = false,
diff --git a/src/state/ParamForwardManager.h b/src/state/ParamForwardManager.h
index 1346d13c..43badd08 100644
--- a/src/state/ParamForwardManager.h
+++ b/src/state/ParamForwardManager.h
@@ -10,6 +10,7 @@ class ParamForwardManager : public chowdsp::ForwardingParametersManager<ParamFor
 public:
     static constexpr int maxParameterCount = 12;
     static constexpr auto numParamSlots = 40;
+    static constexpr std::string_view processorSlotIndexTag = "forwarding_params_slot_index";
 
     ParamForwardManager (AudioProcessorValueTreeState& vts, ProcessorChain& chain);
     ~ParamForwardManager();
diff --git a/src/state/presets/PresetManager.cpp b/src/state/presets/PresetManager.cpp
index 4f4c0de7..fb42da12 100644
--- a/src/state/presets/PresetManager.cpp
+++ b/src/state/presets/PresetManager.cpp
@@ -283,7 +283,7 @@ void PresetManager::filterPresets (std::vector<chowdsp::Preset>& presets, const
 
 std::unique_ptr<XmlElement> PresetManager::savePresetState()
 {
-    auto xml = procChain->getStateHelper().saveProcChain();
+    auto xml = procChain->getStateHelper().saveProcChain (true);
     StateManager::setCurrentPluginVersionInXML (xml.get());
     return xml;
 }