diff --git a/controller/db/terminator_store.go b/controller/db/terminator_store.go
index 8fee4b214..98b7990b9 100644
--- a/controller/db/terminator_store.go
+++ b/controller/db/terminator_store.go
@@ -133,13 +133,15 @@ func (entity *Terminator) SetValues(ctx *boltz.PersistContext) {
 	ctx.SetInt32(FieldTerminatorCost, int32(entity.Cost))
 	ctx.SetRequiredString(FieldTerminatorPrecedence, entity.Precedence)
 
-	_ = ctx.Bucket.DeleteBucket([]byte(FieldServerPeerData))
-	if entity.PeerData != nil {
-		hostDataBucket := ctx.Bucket.GetOrCreateBucket(FieldServerPeerData)
-		for k, v := range entity.PeerData {
-			key := make([]byte, 4)
-			binary.LittleEndian.PutUint32(key, k)
-			hostDataBucket.PutValue(key, v)
+	if ctx.ProceedWithSet(FieldServerPeerData) {
+		_ = ctx.Bucket.DeleteBucket([]byte(FieldServerPeerData))
+		if entity.PeerData != nil {
+			hostDataBucket := ctx.Bucket.GetOrCreateBucket(FieldServerPeerData)
+			for k, v := range entity.PeerData {
+				key := make([]byte, 4)
+				binary.LittleEndian.PutUint32(key, k)
+				hostDataBucket.PutValue(key, v)
+			}
 		}
 	}
 
diff --git a/controller/db/terminator_store_test.go b/controller/db/terminator_store_test.go
index d9ff0c6e6..c34864993 100644
--- a/controller/db/terminator_store_test.go
+++ b/controller/db/terminator_store_test.go
@@ -20,6 +20,7 @@ import (
 	"fmt"
 	"github.com/google/uuid"
 	"github.com/openziti/fabric/controller/xt"
+	"github.com/openziti/foundation/storage/boltz"
 	"github.com/openziti/foundation/util/stringz"
 	"go.etcd.io/bbolt"
 	"math"
@@ -38,6 +39,7 @@ func Test_TerminatorStore(t *testing.T) {
 	t.Run("test create/delete terminators", ctx.testLoadQueryTerminators)
 	t.Run("test update terminators", ctx.testUpdateTerminators)
 	t.Run("test delete terminators", ctx.testDeleteTerminators)
+	t.Run("test patch terminators", ctx.testPatchTerminator)
 }
 
 func (ctx *TestContext) testCreateInvalidTerminators(t *testing.T) {
@@ -229,6 +231,7 @@ func (ctx *TestContext) testUpdateTerminators(t *testing.T) {
 
 	terminator.Service = e.service.Id // service should not be updated
 	ctx.ValidateUpdated(terminator)
+
 }
 
 func (ctx *TestContext) testDeleteTerminators(t *testing.T) {
@@ -247,6 +250,41 @@ func (ctx *TestContext) testDeleteTerminators(t *testing.T) {
 	ctx.ValidateDeleted(e.terminator.Id)
 }
 
+func (ctx *TestContext) testPatchTerminator(t *testing.T) {
+	service := ctx.requireNewService()
+	router := ctx.requireNewRouter()
+
+	terminator := &Terminator{}
+	terminator.Service = service.Id
+	terminator.Router = router.Id
+	terminator.Binding = uuid.New().String()
+	terminator.Address = uuid.New().String()
+	terminator.Cost = 0
+	terminator.PeerData = map[uint32][]byte{
+		1: {1, 2, 3},
+		2: {3, 4, 5},
+	}
+	ctx.RequireCreate(terminator)
+	ctx.ValidateBaseline(terminator)
+
+	terminator.Cost = 100
+	checker := boltz.MapFieldChecker{
+		FieldTerminatorCost: struct{}{},
+	}
+	ctx.RequirePatch(terminator, checker)
+	ctx.ValidateUpdated(terminator)
+
+	terminator.PeerData = map[uint32][]byte{
+		1: {7, 8, 9},
+	}
+
+	checker = boltz.MapFieldChecker{
+		FieldServerPeerData: struct{}{},
+	}
+	ctx.RequirePatch(terminator, checker)
+	ctx.ValidateUpdated(terminator)
+}
+
 type testStrategyFactory struct{}
 
 func (t testStrategyFactory) GetStrategyName() string {
diff --git a/router/xgress/link_send_buffer.go b/router/xgress/link_send_buffer.go
index 07351fbeb..a69df1234 100644
--- a/router/xgress/link_send_buffer.go
+++ b/router/xgress/link_send_buffer.go
@@ -315,7 +315,7 @@ func (buffer *LinkSendBuffer) retransmit() {
 		}
 
 		if retransmitted > 0 {
-			log.Infof("retransmitted [%d] payloads, [%d] buffered, linkSendBufferSize: %d", retransmitted, len(buffer.buffer), buffer.linkSendBufferSize)
+			log.Debugf("retransmitted [%d] payloads, [%d] buffered, linkSendBufferSize: %d", retransmitted, len(buffer.buffer), buffer.linkSendBufferSize)
 		}
 		buffer.lastRetransmitTime = now
 	}
diff --git a/router/xgress/xgress.go b/router/xgress/xgress.go
index f4adaf3e7..8d65083d0 100644
--- a/router/xgress/xgress.go
+++ b/router/xgress/xgress.go
@@ -421,6 +421,11 @@ func (self *Xgress) tx() {
 func (self *Xgress) flushSendThenClose() {
 	self.CloseTimeout(self.Options.MaxCloseWait)
 	self.ForwardEndOfSession(func(payload *Payload) bool {
+		if self.payloadBuffer.closed.Get() {
+			// Avoid spurious 'failed to forward payload' error if the buffer is already closed
+			return false
+		}
+
 		pfxlog.ContextLogger(self.Label()).Debug("sending end of session payload")
 		return self.forwardPayload(payload)
 	})
@@ -495,7 +500,7 @@ func (self *Xgress) forwardPayload(payload *Payload) bool {
 	sendCallback, err := self.payloadBuffer.BufferPayload(payload)
 
 	if err != nil {
-		pfxlog.ContextLogger(self.Label()).WithError(err).Error("failure forwarding payload")
+		pfxlog.ContextLogger(self.Label()).WithError(err).Error("failure to buffer payload")
 		return false
 	}