Index: firmware/App/Modes/ModeTreatment.c
===================================================================
diff -u -r130d76b56808975e8ba467a483bdb3a2e9899691 -r9d8170a50fb293c76c5c1f1875ab3792c2b8fb50
--- firmware/App/Modes/ModeTreatment.c	(.../ModeTreatment.c)	(revision 130d76b56808975e8ba467a483bdb3a2e9899691)
+++ firmware/App/Modes/ModeTreatment.c	(.../ModeTreatment.c)	(revision 9d8170a50fb293c76c5c1f1875ab3792c2b8fb50)
@@ -7,8 +7,8 @@
 *
 * @file    ModeTreatment.c
 *
-* @author  (last)      Dara Navaei
-* @date    (last)      12-Jul-2023
+* @author  (last)      Sean Nash
+* @date    (last)      17-Jul-2023
 *
 * @author  (original)  Dara Navaei
 * @date    (original)  05-Nov-2019
@@ -767,14 +767,7 @@
     // Update treatment time (unless delivering a saline bolus)
     if ( dialysisState != DIALYSIS_SALINE_BOLUS_STATE )
     {
-#ifdef DIALYZER_REPRIME_ENABLED
-        if ( dialysisState != DIALYSIS_DIALYZER_REPRIME_STATE )
-        {
-#endif
         treatmentTimeMS += msSinceLast;
-#ifdef DIALYZER_REPRIME_ENABLED
-        }
-#endif
     }
     lastTreatmentTimeStamp = newTime;
 
@@ -1142,19 +1135,8 @@
         {
             pendingUFRateChange = 0.0;
         }
-        // Verify treatment duration change would be valid (leave zero if not valid - UI will disable option)
-        if ( ( trtTime <= MAX_TREATMENT_TIME_MINUTES ) && ( trtTime >= getMinTreatmentTimeInMinutes() ) &&
-             ( dialVolume <= MAX_DIALYSATE_VOLUME_ML ) )
-        {
-            result = TRUE;
-            pendingUFVolumeChange = uFVolume;
-            pendingTreatmentTimeChange = trtTime;
-            timeDiff = trtTime - ( (U32)( (F32)presTreatmentTimeSecs / (F32)SEC_PER_MIN ) + 1 );
-        }
-        else
-        {
-            pendingTreatmentTimeChange = 0;
-        }
+        // Treatment duration change is now never valid - leave zero - UI will disable option)
+        pendingTreatmentTimeChange = 0;
         // If neither option works, reject for UF rate
         if ( FALSE == result )
         {
@@ -1216,14 +1198,9 @@
         presMaxUFVolumeML = pendingUFVolumeChange;
         setTreatmentParameterF32( TREATMENT_PARAM_UF_VOLUME, ( presMaxUFVolumeML / (F32)ML_PER_LITER ) );
 
-        // Which setting does user want to adjust to accommodate the UF volume change? (treatment time or UF rate)
-        if ( UF_ADJ_TREATMENT_TIME == adjustment )
+        // User should only allow UF rate adjustment to achieve UF volume change
+        if ( UF_ADJ_UF_RATE == adjustment )
         {
-            presTreatmentTimeSecs = pendingTreatmentTimeChange * SEC_PER_MIN;
-            setTreatmentParameterU32( TREATMENT_PARAM_TREATMENT_DURATION, ( presTreatmentTimeSecs / SEC_PER_MIN ) );
-        }
-        else // Must be adjusting UF rate then
-        {
             sendTreatmentLogEventData( UF_RATE_CHANGE_EVENT, presUFRate, pendingUFRateChange );
             presUFRate = pendingUFRateChange;
             signalInitiatePressureStabilization();
@@ -1460,11 +1437,6 @@
         payload.txEndState = getCurrentTreatmentEndState();
         payload.heparinState = getHeparinState();
         payload.dialysisState = getDialysisState();
-#ifdef DIALYZER_REPRIME_ENABLED
-        payload.dlzReprimeState = getDialyzerRePrimeState();
-#else
-        payload.dlzReprimeState = 0;
-#endif
 
         broadcastData( MSG_ID_TREATMENT_STATE_DATA, COMM_BUFFER_OUT_CAN_HD_BROADCAST, (U08*)&payload, sizeof( TREATMENT_STATE_DATA_T ) );
         treatmentStateBroadcastTimerCtr = 0;