diff --git a/src/main/java/org/prebid/server/bidder/connatix/ConnatixBidder.java b/src/main/java/org/prebid/server/bidder/connatix/ConnatixBidder.java
index b319b04c932..aef2abcaf61 100644
--- a/src/main/java/org/prebid/server/bidder/connatix/ConnatixBidder.java
+++ b/src/main/java/org/prebid/server/bidder/connatix/ConnatixBidder.java
@@ -171,13 +171,12 @@ private ExtImpConnatix parseExtImp(Imp imp) {
     private Imp modifyImp(Imp imp, ExtImpConnatix extImpConnatix, String displayManagerVer, BidRequest request) {
         final Price bidFloorPrice = resolveBidFloor(imp, request);
 
-        final ObjectNode impExt = mapper.mapper()
-                .createObjectNode().set("connatix", mapper.mapper().valueToTree(extImpConnatix));
+        final ObjectNode impExt = imp.getExt() != null
+                ? imp.getExt().deepCopy()
+                : mapper.mapper().createObjectNode();
 
-        Optional.ofNullable(imp.getExt())
-                .map(ext -> ext.get(GPID_KEY))
-                .filter(JsonNode::isTextual)
-                .ifPresent(gpidNode -> impExt.set(GPID_KEY, gpidNode));
+        impExt.remove("bidder");
+        impExt.set("connatix", mapper.mapper().valueToTree(extImpConnatix));
 
         return imp.toBuilder()
                 .ext(impExt)
diff --git a/src/test/java/org/prebid/server/bidder/connatix/ConnatixBidderTest.java b/src/test/java/org/prebid/server/bidder/connatix/ConnatixBidderTest.java
index f24dec142fb..01fb0c58930 100644
--- a/src/test/java/org/prebid/server/bidder/connatix/ConnatixBidderTest.java
+++ b/src/test/java/org/prebid/server/bidder/connatix/ConnatixBidderTest.java
@@ -350,11 +350,12 @@ public void makeHttpRequestsShouldExcludeDataCenterWhenUserIdIsMissing() {
     }
 
     @Test
-    public void makeHttpRequestsShouldIncludeGpidWhenPresent() {
+    public void makeHttpRequestsShouldIncludeEntireImpExt() {
         // given
         final ObjectNode impExt = mapper.createObjectNode();
         impExt.set("bidder", mapper.valueToTree(ExtImpConnatix.of("placementId", null)));
         impExt.put("gpid", "test-gpid");
+        impExt.put("random", "test-random");
 
         final BidRequest bidRequest = givenBidRequest(
                 UnaryOperator.identity(),
@@ -367,6 +368,7 @@ public void makeHttpRequestsShouldIncludeGpidWhenPresent() {
         final ObjectNode expectedExt = mapper.createObjectNode();
         expectedExt.set("connatix", mapper.valueToTree(ExtImpConnatix.of("placementId", null)));
         expectedExt.put("gpid", "test-gpid");
+        expectedExt.put("random", "test-random");
 
         assertThat(result.getErrors()).isEmpty();
         assertThat(result.getValue())
diff --git a/src/test/resources/org/prebid/server/it/openrtb2/connatix/test-banner-connatix-bid-request.json b/src/test/resources/org/prebid/server/it/openrtb2/connatix/test-banner-connatix-bid-request.json
index c9007f58508..206373719fb 100644
--- a/src/test/resources/org/prebid/server/it/openrtb2/connatix/test-banner-connatix-bid-request.json
+++ b/src/test/resources/org/prebid/server/it/openrtb2/connatix/test-banner-connatix-bid-request.json
@@ -12,6 +12,7 @@
         "connatix": {
           "placementId": "some-placement-id"
         },
+        "tid": "${json-unit.any-string}",
         "gpid": "test-gpid"
       }
     }