diff --git a/.gitignore b/.gitignore
index e8e79bfa..b38ab4c5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,4 @@
-__debug_bin
+__debug_bin*
 __debug_bin.exe
 .idea/
 
diff --git a/api/ws/handlers/roi.go b/api/ws/handlers/roi.go
index 921062a2..98b71fce 100644
--- a/api/ws/handlers/roi.go
+++ b/api/ws/handlers/roi.go
@@ -45,6 +45,14 @@ func HandleRegionOfInterestGetReq(req *protos.RegionOfInterestGetReq, hctx wsHel
 }
 
 func HandleRegionOfInterestDeleteReq(req *protos.RegionOfInterestDeleteReq, hctx wsHelpers.HandlerContext) (*protos.RegionOfInterestDeleteResp, error) {
+	if req.IsMIST {
+		// Delete from MIST table
+		_, err := hctx.Svcs.MongoDB.Collection(dbCollections.MistROIsName).DeleteOne(context.TODO(), bson.D{{"_id", req.Id}})
+		if err != nil {
+			return nil, err
+		}
+	}
+
 	return wsHelpers.DeleteUserObject[protos.RegionOfInterestDeleteResp](req.Id, protos.ObjectType_OT_ROI, dbCollections.RegionsOfInterestName, hctx)
 }
 
@@ -358,8 +366,9 @@ func HandleRegionOfInterestBulkWriteReq(req *protos.RegionOfInterestBulkWriteReq
 		}
 	}
 
-	writtenROIs := []*protos.ROIItem{}
+	needMistEntry := false
 
+	writtenROIs := []*protos.ROIItem{}
 	for _, item := range req.RegionsOfInterest {
 		item.Owner = nil
 		item.IsMIST = req.IsMIST
@@ -371,15 +380,49 @@ func HandleRegionOfInterestBulkWriteReq(req *protos.RegionOfInterestBulkWriteReq
 			if err != nil {
 				return nil, err
 			}
+		} else if req.SkipDuplicates {
+			// If id is not empty, but we're not overwriting, so skip this ROI
+			// If id is empty and this is a MIST ROI, we need to check if this ROI already exists
+			if req.IsMIST && len(item.MistROIItem.ClassificationTrail) > 0 {
+				// Skip ROIs with same classification trail for the same scan
+				filter := bson.M{"scanid": item.ScanId, "classificationtrail": item.MistROIItem.ClassificationTrail}
+				opts := options.Find().SetProjection(bson.M{"_id": true})
+				cursor, err := hctx.Svcs.MongoDB.Collection(dbCollections.MistROIsName).Find(context.Background(), filter, opts)
+				if err != nil {
+					return nil, err
+				}
+
+				ids := []*IdOnly{}
+				err = cursor.All(context.Background(), &ids)
+				if err != nil {
+					return nil, err
+				}
+
+				// If we found an ROI with the same classification trail, then don't create a new one
+				if len(ids) > 0 {
+					continue
+				} else {
+					// Create new ROI
+					item, err = createROI(item, hctx)
+					if err != nil {
+						return nil, err
+					}
+
+					needMistEntry = true
+				}
+			}
+
 		} else {
 			// Create new ROI
 			item, err = createROI(item, hctx)
 			if err != nil {
 				return nil, err
 			}
+
+			needMistEntry = req.IsMIST
 		}
 
-		if req.IsMIST {
+		if needMistEntry {
 			mistROIItem := &protos.MistROIItem{
 				Id:                  item.Id,
 				ScanId:              item.ScanId,
diff --git a/data-formats b/data-formats
index ed33d6b1..d8ae00d7 160000
--- a/data-formats
+++ b/data-formats
@@ -1 +1 @@
-Subproject commit ed33d6b1b408d276aea5cb24e890eddeafe65140
+Subproject commit d8ae00d7bbfc33ccd9744f49b9a4e8cdde3a45cf
diff --git a/generated-protos/roi-msgs.pb.go b/generated-protos/roi-msgs.pb.go
index 626dd9c5..8d1f8c98 100644
--- a/generated-protos/roi-msgs.pb.go
+++ b/generated-protos/roi-msgs.pb.go
@@ -345,9 +345,10 @@ type RegionOfInterestBulkWriteReq struct {
 	unknownFields protoimpl.UnknownFields
 
 	RegionsOfInterest      []*ROIItem `protobuf:"bytes,1,rep,name=regionsOfInterest,proto3" json:"regionsOfInterest,omitempty"`
-	Overwrite              bool       `protobuf:"varint,5,opt,name=overwrite,proto3" json:"overwrite,omitempty"` // if true, then overwrite existing ROIs with same ID
-	IsMIST                 bool       `protobuf:"varint,2,opt,name=isMIST,proto3" json:"isMIST,omitempty"`
-	MistROIScanIdsToDelete []string   `protobuf:"bytes,3,rep,name=mistROIScanIdsToDelete,proto3" json:"mistROIScanIdsToDelete,omitempty"` // List of scan ids to delete all MIST ROIs for
+	Overwrite              bool       `protobuf:"varint,2,opt,name=overwrite,proto3" json:"overwrite,omitempty"`           // if true, then overwrite existing ROIs with same ID
+	SkipDuplicates         bool       `protobuf:"varint,3,opt,name=skipDuplicates,proto3" json:"skipDuplicates,omitempty"` // if true, then skip ROIs with same ID
+	IsMIST                 bool       `protobuf:"varint,4,opt,name=isMIST,proto3" json:"isMIST,omitempty"`
+	MistROIScanIdsToDelete []string   `protobuf:"bytes,5,rep,name=mistROIScanIdsToDelete,proto3" json:"mistROIScanIdsToDelete,omitempty"` // List of scan ids to delete all MIST ROIs for
 }
 
 func (x *RegionOfInterestBulkWriteReq) Reset() {
@@ -396,6 +397,13 @@ func (x *RegionOfInterestBulkWriteReq) GetOverwrite() bool {
 	return false
 }
 
+func (x *RegionOfInterestBulkWriteReq) GetSkipDuplicates() bool {
+	if x != nil {
+		return x.SkipDuplicates
+	}
+	return false
+}
+
 func (x *RegionOfInterestBulkWriteReq) GetIsMIST() bool {
 	if x != nil {
 		return x.IsMIST
@@ -463,7 +471,8 @@ type RegionOfInterestDeleteReq struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Id string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	Id     string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	IsMIST bool   `protobuf:"varint,2,opt,name=isMIST,proto3" json:"isMIST,omitempty"`
 }
 
 func (x *RegionOfInterestDeleteReq) Reset() {
@@ -505,6 +514,13 @@ func (x *RegionOfInterestDeleteReq) GetId() string {
 	return ""
 }
 
+func (x *RegionOfInterestDeleteReq) GetIsMIST() bool {
+	if x != nil {
+		return x.IsMIST
+	}
+	return false
+}
+
 type RegionOfInterestDeleteResp struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -591,27 +607,31 @@ var file_roi_msgs_proto_rawDesc = []byte{
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