diff --git a/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/context/BaseWorkerContext.java b/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/context/BaseWorkerContext.java
index a1c23af68..1aa573eb5 100644
--- a/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/context/BaseWorkerContext.java
+++ b/org.hl7.fhir.r5/src/main/java/org/hl7/fhir/r5/context/BaseWorkerContext.java
@@ -3157,11 +3157,14 @@ public abstract class BaseWorkerContext extends I18nBase implements IWorkerConte
   
   private <T extends Resource> T doFindTxResource(Class<T> class_, String canonical) {
     // well, we haven't found it locally. We're going look it up
+    System.out.println("doFindTxResource: "+canonical);
     if (class_ == ValueSet.class) {
       SourcedValueSet svs = null;
       if (txCache.hasValueSet(canonical)) {
+        System.out.println("doFindTxResource - in cache");
         svs = txCache.getValueSet(canonical);
       } else {
+        System.out.println("doFindTxResource - not in cache");
         svs = terminologyClientManager.findValueSetOnServer(canonical);
         txCache.cacheValueSet(canonical, svs);
       }
diff --git a/org.hl7.fhir.validation/src/test/resources/txCache/org.hl7.fhir.validation/4.0.1/https___www.humanservices.gov.au_organisations_health-professionals_enablers_air-vaccine-code-formats.cache b/org.hl7.fhir.validation/src/test/resources/txCache/org.hl7.fhir.validation/4.0.1/https___www.humanservices.gov.au_organisations_health-professionals_enablers_air-vaccine-code-formats.cache
index f2b35ce13..72ecf45bf 100644
--- a/org.hl7.fhir.validation/src/test/resources/txCache/org.hl7.fhir.validation/4.0.1/https___www.humanservices.gov.au_organisations_health-professionals_enablers_air-vaccine-code-formats.cache
+++ b/org.hl7.fhir.validation/src/test/resources/txCache/org.hl7.fhir.validation/4.0.1/https___www.humanservices.gov.au_organisations_health-professionals_enablers_air-vaccine-code-formats.cache
@@ -15,7 +15,6 @@ v: {
   "system" : "https://www.humanservices.gov.au/organisations/health-professionals/enablers/air-vaccine-code-formats",
   "version" : "20210222",
   "server" : "http://tx-dev.fhir.org/r4",
-  "unknown-systems" : "",
   "issues" : {
   "resourceType" : "OperationOutcome"
 }
@@ -32,6 +31,28 @@ v: {
     "valueString" : "http://hl7.org/fhir/ExpansionProfile/dc8fd4bc-091a-424a-8a3b-6198ef146891"
   }]
 }}####
+v: {
+  "display" : "COVID-19 Vaccine AstraZeneca",
+  "code" : "COVAST",
+  "system" : "https://www.humanservices.gov.au/organisations/health-professionals/enablers/air-vaccine-code-formats",
+  "version" : "20210222",
+  "server" : "http://tx-dev.fhir.org/r4",
+  "issues" : {
+  "resourceType" : "OperationOutcome"
+}
+
+}
+-------------------------------------------------------------------------------------
+{"code" : {
+  "system" : "https://www.humanservices.gov.au/organisations/health-professionals/enablers/air-vaccine-code-formats",
+  "code" : "COVAST"
+}, "valueSet" :null, "langs":"", "useServer":"true", "useClient":"true", "guessSystem":"false", "activeOnly":"false", "membershipOnly":"false", "displayWarningMode":"false", "versionFlexible":"false", "profile": {
+  "resourceType" : "Parameters",
+  "parameter" : [{
+    "name" : "profile-url",
+    "valueString" : "http://hl7.org/fhir/ExpansionProfile/dc8fd4bc-091a-424a-8a3b-6198ef146891"
+  }]
+}}####
 v: {
   "display" : "COVID-19 Vaccine AstraZeneca",
   "code" : "COVAST",