diff --git a/src/main/java/edu/harvard/iq/dataverse/DatasetServiceBean.java b/src/main/java/edu/harvard/iq/dataverse/DatasetServiceBean.java
index 29f7570a645..2686584f307 100644
--- a/src/main/java/edu/harvard/iq/dataverse/DatasetServiceBean.java
+++ b/src/main/java/edu/harvard/iq/dataverse/DatasetServiceBean.java
@@ -126,7 +126,8 @@ public Dataset findDeep(Object pk) {
             .setHint("eclipselink.left-join-fetch", "o.files.dataFileTags")
             .setHint("eclipselink.left-join-fetch", "o.files.fileMetadatas")
             .setHint("eclipselink.left-join-fetch", "o.files.fileMetadatas.fileCategories")
-            //.setHint("eclipselink.left-join-fetch", "o.files.guestbookResponses")
+            .setHint("eclipselink.left-join-fetch", "o.files.fileMetadatas.varGroups")
+            //.setHint("eclipselink.left-join-fetch", "o.files.guestbookResponses
             .setHint("eclipselink.left-join-fetch", "o.files.embargo")
             .setHint("eclipselink.left-join-fetch", "o.files.retention")
             .setHint("eclipselink.left-join-fetch", "o.files.fileAccessRequests")
diff --git a/src/main/java/edu/harvard/iq/dataverse/api/AbstractApiBean.java b/src/main/java/edu/harvard/iq/dataverse/api/AbstractApiBean.java
index b7e94464db9..19df6d8c1c7 100644
--- a/src/main/java/edu/harvard/iq/dataverse/api/AbstractApiBean.java
+++ b/src/main/java/edu/harvard/iq/dataverse/api/AbstractApiBean.java
@@ -23,6 +23,7 @@
 import edu.harvard.iq.dataverse.engine.command.exception.RateLimitCommandException;
 import edu.harvard.iq.dataverse.externaltools.ExternalToolServiceBean;
 import edu.harvard.iq.dataverse.license.LicenseServiceBean;
+import edu.harvard.iq.dataverse.pidproviders.PidUtil;
 import edu.harvard.iq.dataverse.locality.StorageSiteServiceBean;
 import edu.harvard.iq.dataverse.metrics.MetricsServiceBean;
 import edu.harvard.iq.dataverse.search.savedsearch.SavedSearchServiceBean;
@@ -371,6 +372,11 @@ protected DataverseLinkingDataverse findDataverseLinkingDataverseOrDie(String da
     }
 
     protected Dataset findDatasetOrDie(String id) throws WrappedResponse {
+        return findDatasetOrDie(id, false);
+    }
+
+    protected Dataset findDatasetOrDie(String id, boolean deep) throws WrappedResponse {
+        Long datasetId;
         Dataset dataset;
         if (id.equals(PERSISTENT_ID_KEY)) {
             String persistentId = getRequestParameter(PERSISTENT_ID_KEY.substring(1));
@@ -378,24 +384,38 @@ protected Dataset findDatasetOrDie(String id) throws WrappedResponse {
                 throw new WrappedResponse(
                         badRequest(BundleUtil.getStringFromBundle("find.dataset.error.dataset_id_is_null", Collections.singletonList(PERSISTENT_ID_KEY.substring(1)))));
             }
-            dataset = datasetSvc.findByGlobalId(persistentId);
-            if (dataset == null) {
-                throw new WrappedResponse(notFound(BundleUtil.getStringFromBundle("find.dataset.error.dataset.not.found.persistentId", Collections.singletonList(persistentId))));
+            GlobalId globalId;
+            try {
+                globalId = PidUtil.parseAsGlobalID(persistentId);
+            } catch (IllegalArgumentException e) {
+                throw new WrappedResponse(
+                    badRequest(BundleUtil.getStringFromBundle("find.dataset.error.dataset.not.found.bad.id", Collections.singletonList(persistentId))));
+            }
+            datasetId = dvObjSvc.findIdByGlobalId(globalId, DvObject.DType.Dataset);
+            if (datasetId == null) {
+                datasetId = dvObjSvc.findIdByAltGlobalId(globalId, DvObject.DType.Dataset);
+            }
+            if (datasetId == null) {
+                throw new WrappedResponse(
+                    notFound(BundleUtil.getStringFromBundle("find.dataset.error.dataset_id_is_null", Collections.singletonList(PERSISTENT_ID_KEY.substring(1)))));
             }
-            return dataset;
-
         } else {
             try {
-                dataset = datasetSvc.find(Long.parseLong(id));
-                if (dataset == null) {
-                    throw new WrappedResponse(notFound(BundleUtil.getStringFromBundle("find.dataset.error.dataset.not.found.id", Collections.singletonList(id))));
-                }
-                return dataset;
+                datasetId = Long.parseLong(id);
             } catch (NumberFormatException nfe) {
                 throw new WrappedResponse(
                         badRequest(BundleUtil.getStringFromBundle("find.dataset.error.dataset.not.found.bad.id", Collections.singletonList(id))));
             }
         }
+        if (deep) {
+            dataset = datasetSvc.findDeep(datasetId);
+        } else {
+            dataset = datasetSvc.find(datasetId);
+        }
+        if (dataset == null) {
+            throw new WrappedResponse(notFound(BundleUtil.getStringFromBundle("find.dataset.error.dataset.not.found.id", Collections.singletonList(id))));
+        }
+        return dataset;
     }
 
     protected DatasetVersion findDatasetVersionOrDie(final DataverseRequest req, String versionNumber, final Dataset ds, boolean includeDeaccessioned, boolean checkPermsWhenDeaccessioned) throws WrappedResponse {
diff --git a/src/main/java/edu/harvard/iq/dataverse/api/Datasets.java b/src/main/java/edu/harvard/iq/dataverse/api/Datasets.java
index b9428129dc8..1befb3869c3 100644
--- a/src/main/java/edu/harvard/iq/dataverse/api/Datasets.java
+++ b/src/main/java/edu/harvard/iq/dataverse/api/Datasets.java
@@ -195,7 +195,7 @@ public interface DsVersionHandler<T> {
     @Path("{id}")
     public Response getDataset(@Context ContainerRequestContext crc, @PathParam("id") String id, @Context UriInfo uriInfo, @Context HttpHeaders headers, @Context HttpServletResponse response,  @QueryParam("returnOwners") boolean returnOwners) {
         return response( req -> {
-            final Dataset retrieved = execCommand(new GetDatasetCommand(req, findDatasetOrDie(id)));
+            final Dataset retrieved = execCommand(new GetDatasetCommand(req, findDatasetOrDie(id, true)));
             final DatasetVersion latest = execCommand(new GetLatestAccessibleDatasetVersionCommand(req, retrieved));
             final JsonObjectBuilder jsonbuilder = json(retrieved, returnOwners);
             //Report MDC if this is a released version (could be draft if user has access, or user may not have access at all and is not getting metadata beyond the minimum)
@@ -480,7 +480,7 @@ public Response getVersionFiles(@Context ContainerRequestContext crc,
                                     @Context UriInfo uriInfo,
                                     @Context HttpHeaders headers) {
         return response(req -> {
-            DatasetVersion datasetVersion = getDatasetVersionOrDie(req, versionId, findDatasetOrDie(datasetId), uriInfo, headers, includeDeaccessioned);
+            DatasetVersion datasetVersion = getDatasetVersionOrDie(req, versionId, findDatasetOrDie(datasetId, false), uriInfo, headers, includeDeaccessioned);
             DatasetVersionFilesServiceBean.FileOrderCriteria fileOrderCriteria;
             try {
                 fileOrderCriteria = orderCriteria != null ? DatasetVersionFilesServiceBean.FileOrderCriteria.valueOf(orderCriteria) : DatasetVersionFilesServiceBean.FileOrderCriteria.NameAZ;