diff --git a/lib_com/options.h b/lib_com/options.h
index aa3047dffbe4ce27d8316c1078dfaddfc92db671..10739ffc6fed098ace65cc823eb4157ef12c2308 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -173,6 +173,7 @@
 #define NONBE_1215_FIX_JBM_MAX_SCALING                  /* FhG: issue 1215: Fix assert hit in a specific VoIP decoder config. Caused by integer overflow in max scaling calculation. */
 #define NONBE_FIX_1255_OBJ_EDIT_JBM                     /* VA: issue 1255: restore object editing in JBM */
 #define NONBE_FIX_1189_GSC_IVAS_OMASA                   /* VA: Fix for issue 1189: Bitstream desynchornization due to reading/writing of the GSC_IVAS_mode parameter */
+#define NONBE_1214_PLC_LSF_MEMORY                       /* VA: issue 1224: reset ACELP PLC FEC memory in case of switching from MDCT stereo to TD/DFT stereo */
 
 /* ##################### End NON-BE switches ########################### */
 
diff --git a/lib_dec/core_switching_dec.c b/lib_dec/core_switching_dec.c
index c15a165989db764a8a59e7f68ece3698c26a9bfb..686e5926db5f82aa617ebd2899cb95431335e927 100644
--- a/lib_dec/core_switching_dec.c
+++ b/lib_dec/core_switching_dec.c
@@ -263,8 +263,14 @@ ivas_error core_switching_pre_dec(
         st->uv_count = 0;
     }
 
+#ifdef NONBE_1214_PLC_LSF_MEMORY
+    if ( ( ( st->core == ACELP_CORE || st->core == AMR_WB_CORE ) && st->last_core == HQ_CORE ) /* EVS and HQ -> ACELP */ ||
+         ( ( st->element_mode == IVAS_CPE_DFT || st->element_mode == IVAS_CPE_TD || ( st->element_mode == IVAS_CPE_MDCT && last_element_mode == IVAS_CPE_DFT ) ) && nchan_out == 2 && st->core_brate != SID_2k40 && st->core_brate != FRAME_NO_DATA && ( last_core_brate_st0 == FRAME_NO_DATA || last_core_brate_st0 == SID_2k40 ) ) ||
+         ( st->core == ACELP_CORE && st->last_L_frame > L_FRAME16k ) /* TCX @ 25.6/32 kHz -> ACELP */ )
+#else
     if ( ( ( st->core == ACELP_CORE || st->core == AMR_WB_CORE ) && st->last_core == HQ_CORE ) || ( ( st->element_mode == IVAS_CPE_DFT || st->element_mode == IVAS_CPE_TD || ( st->element_mode == IVAS_CPE_MDCT && last_element_mode == IVAS_CPE_DFT ) ) && nchan_out == 2 &&
                                                                                                     st->core_brate != SID_2k40 && st->core_brate != FRAME_NO_DATA && ( last_core_brate_st0 == FRAME_NO_DATA || last_core_brate_st0 == SID_2k40 ) ) )
+#endif
     {
         if ( st->element_mode == IVAS_CPE_DFT || st->element_mode == IVAS_CPE_TD )
         {
diff --git a/lib_enc/core_switching_enc.c b/lib_enc/core_switching_enc.c
index acc45973e9134164c75879d3467779e6fe22d7ce..c4a8f8bd52514f2b160df3e0109c2e8ded59fe03 100644
--- a/lib_enc/core_switching_enc.c
+++ b/lib_enc/core_switching_enc.c
@@ -171,7 +171,13 @@ void core_switching_pre_enc(
         st->uv_count = 0;
     }
 
+#ifdef NONBE_1214_PLC_LSF_MEMORY
+    if ( ( ( st->core == ACELP_CORE || st->core == AMR_WB_CORE ) && st->last_core == HQ_CORE ) /* EVS and HQ -> ACELP */ ||
+         ( ( st->element_mode == IVAS_CPE_DFT || st->element_mode == IVAS_CPE_TD || ( st->element_mode == IVAS_CPE_MDCT && last_element_mode == IVAS_CPE_DFT ) ) && active_cnt == 1 ) ||
+         ( st->core == ACELP_CORE && st->last_L_frame > L_FRAME16k ) /* TCX @ 25.6/32 kHz -> ACELP */ )
+#else
     if ( ( ( st->core == ACELP_CORE || st->core == AMR_WB_CORE ) && st->last_core == HQ_CORE ) || ( ( st->element_mode == IVAS_CPE_DFT || st->element_mode == IVAS_CPE_TD || ( st->element_mode == IVAS_CPE_MDCT && last_element_mode == IVAS_CPE_DFT ) ) && active_cnt == 1 ) )
+#endif
     {
         /* Reset the ACELP core in case of HQ->ACELP core switching */