diff --git a/task-launcher/src/tasks/math/trials/sliderStimulus.js b/task-launcher/src/tasks/math/trials/sliderStimulus.js
index a4b269d7..7130f017 100644
--- a/task-launcher/src/tasks/math/trials/sliderStimulus.js
+++ b/task-launcher/src/tasks/math/trials/sliderStimulus.js
@@ -237,6 +237,7 @@ export const slider = {
       response: _toNumber(response),
       responseType: responseType,
       distractors: stimulus.distractors,
+      corpusTrialType: stim.trialType,
       // slider_start: stimulus.item[1] === 1 ? sliderStart / 100 : sliderStart,
       slider_start: sliderStart,
     });
diff --git a/task-launcher/src/tasks/same-different-selection/trials/afcMatch.js b/task-launcher/src/tasks/same-different-selection/trials/afcMatch.js
index 6afdc5fe..e1529bfa 100644
--- a/task-launcher/src/tasks/same-different-selection/trials/afcMatch.js
+++ b/task-launcher/src/tasks/same-different-selection/trials/afcMatch.js
@@ -105,7 +105,7 @@ export const afcMatch = {
     // save data
     jsPsych.data.addDataToLastTrial({
       corpusTrialType: stim.trialType,
-      answer: stim.answer || "No answer provided",
+      answer: stim.answer || null,
       response: selectedCards,
       distractors: stim.distractors,
       item: stim.item,
diff --git a/task-launcher/src/tasks/shared/helpers/initTrialSaving.js b/task-launcher/src/tasks/shared/helpers/initTrialSaving.js
index e93162f9..02ae12f0 100644
--- a/task-launcher/src/tasks/shared/helpers/initTrialSaving.js
+++ b/task-launcher/src/tasks/shared/helpers/initTrialSaving.js
@@ -36,8 +36,9 @@ export const initTrialSaving = (config) => {
       delete dataCopy.keyboard_response;
       delete dataCopy.response_source;
       dataCopy.responseSource = data.response_source;
-      delete dataCopy.trial_index;
       delete dataCopy.trial_type;
+      dataCopy.trialIndex = dataCopy.trial_index;
+      delete dataCopy.trial_index;
 
       if (config.isRoarApp) {
         config.firekit.writeTrial(dataCopy, computedScoreCallback);