diff --git a/src/main/java/eu/bbmri_eric/negotiator/info_submission/InformationSubmission.java b/src/main/java/eu/bbmri_eric/negotiator/info_submission/InformationSubmission.java
index 2a6f2896c..8a99be235 100644
--- a/src/main/java/eu/bbmri_eric/negotiator/info_submission/InformationSubmission.java
+++ b/src/main/java/eu/bbmri_eric/negotiator/info_submission/InformationSubmission.java
@@ -11,8 +11,6 @@
 import jakarta.persistence.ManyToOne;
 import lombok.Getter;
 import lombok.Setter;
-import org.hibernate.annotations.JdbcTypeCode;
-import org.hibernate.type.SqlTypes;
 
 /** Represents a submission of additional information by the resource representative. */
 @Setter
@@ -62,6 +60,5 @@ public InformationSubmission(
   @JoinColumn(name = "negotiation_id")
   private Negotiation negotiation;
 
-  @JdbcTypeCode(SqlTypes.JSON)
   private String payload;
 }
diff --git a/src/main/java/eu/bbmri_eric/negotiator/info_submission/InformationSubmissionServiceImpl.java b/src/main/java/eu/bbmri_eric/negotiator/info_submission/InformationSubmissionServiceImpl.java
index 16b52eff9..fb890964b 100644
--- a/src/main/java/eu/bbmri_eric/negotiator/info_submission/InformationSubmissionServiceImpl.java
+++ b/src/main/java/eu/bbmri_eric/negotiator/info_submission/InformationSubmissionServiceImpl.java
@@ -21,12 +21,12 @@
 import java.io.OutputStreamWriter;
 import java.util.ArrayList;
 import java.util.LinkedHashMap;
+import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Objects;
 import java.util.Optional;
 import java.util.Set;
-import java.util.TreeSet;
 import lombok.NonNull;
 import lombok.extern.apachecommons.CommonsLog;
 import org.apache.commons.csv.CSVFormat;
@@ -198,9 +198,9 @@ private static void buildRow(
 
   private static @NonNull Set<String> generatedHeadersFromResponses(
       List<InformationSubmission> submissions, ObjectMapper objectMapper) {
-    Set<String> jsonKeys = new TreeSet<>();
+    Set<String> jsonKeys = new LinkedHashSet<>();
     for (InformationSubmission submission : submissions) {
-      JsonNode payload = null;
+      JsonNode payload;
       try {
         payload = objectMapper.readTree(submission.getPayload());
       } catch (JsonProcessingException e) {
diff --git a/src/main/java/eu/bbmri_eric/negotiator/negotiation/Negotiation.java b/src/main/java/eu/bbmri_eric/negotiator/negotiation/Negotiation.java
index 616c27f48..a7f4b40b6 100644
--- a/src/main/java/eu/bbmri_eric/negotiator/negotiation/Negotiation.java
+++ b/src/main/java/eu/bbmri_eric/negotiator/negotiation/Negotiation.java
@@ -40,9 +40,7 @@
 import lombok.Setter;
 import lombok.ToString.Exclude;
 import org.hibernate.annotations.Formula;
-import org.hibernate.annotations.JdbcTypeCode;
 import org.hibernate.annotations.UuidGenerator;
-import org.hibernate.type.SqlTypes;
 
 @Entity
 @NoArgsConstructor
@@ -81,10 +79,9 @@ public class Negotiation extends AuditEntity {
   @Exclude
   private Set<Request> requests;
 
-  @Formula(value = "JSONB_EXTRACT_PATH_TEXT(payload, 'project', 'title')")
+  @Formula(value = "JSONB_EXTRACT_PATH_TEXT(payload::jsonb, 'project', 'title')")
   private String title;
 
-  @JdbcTypeCode(SqlTypes.JSON)
   private String payload;
 
   private boolean publicPostsEnabled = true;
diff --git a/src/main/resources/db/migration/V14.0__change_payload.sql b/src/main/resources/db/migration/V14.0__change_payload.sql
new file mode 100644
index 000000000..003068c71
--- /dev/null
+++ b/src/main/resources/db/migration/V14.0__change_payload.sql
@@ -0,0 +1,30 @@
+-- 1. Add a new column of type TEXT
+ALTER TABLE negotiation
+    ADD COLUMN payload_text TEXT;
+
+-- 2. Copy the data from the JSONB column to the new TEXT column
+UPDATE negotiation
+SET payload_text = payload::TEXT;
+
+-- 3. Drop the original JSONB column
+ALTER TABLE negotiation
+    DROP COLUMN payload;
+
+-- 4. Rename the new TEXT column to the original column name
+ALTER TABLE negotiation
+    RENAME COLUMN payload_text TO payload;
+
+ALTER TABLE information_submission
+    ADD COLUMN payload_text TEXT;
+
+-- 2. Copy the data from the JSONB column to the new TEXT column
+UPDATE information_submission
+SET payload_text = payload::TEXT;
+
+-- 3. Drop the original JSONB column
+ALTER TABLE information_submission
+    DROP COLUMN payload;
+
+-- 4. Rename the new TEXT column to the original column name
+ALTER TABLE information_submission
+    RENAME COLUMN payload_text TO payload;
diff --git a/src/test/java/eu/bbmri_eric/negotiator/integration/api/v3/InformationRequirementControllerTest.java b/src/test/java/eu/bbmri_eric/negotiator/integration/api/v3/InformationRequirementControllerTest.java
index cea0bf7ad..ba3599d9a 100644
--- a/src/test/java/eu/bbmri_eric/negotiator/integration/api/v3/InformationRequirementControllerTest.java
+++ b/src/test/java/eu/bbmri_eric/negotiator/integration/api/v3/InformationRequirementControllerTest.java
@@ -517,8 +517,8 @@ void generateSummary_1submission_ok() throws Exception {
         .andExpect(status().isOk());
     String expectedResponse =
         """
-resourceId,num-of-samples,num-of-subjects,sample-type,volume-per-sample
-biobank:1:collection:1,20,10,DNA,5
+resourceId,sample-type,num-of-subjects,num-of-samples,volume-per-sample
+biobank:1:collection:1,DNA,10,20,5
 """;
     mockMvc
         .perform(