diff --git a/lib_com/options.h b/lib_com/options.h
index 531476712dd510609b8f3c07ad1a6626a42a2e60..addbec25cc92305aa675cada71b2c8b587e07c88 100644
--- a/lib_com/options.h
+++ b/lib_com/options.h
@@ -209,6 +209,7 @@
 #define NONBE_FIX_1337_MISSING_DIRECTIVITY_DISTATT_EXTREND /* Eri: issue 1337: Missing directivity setting and distance attenuation in external renderer IVAS_rend */
 #define FIX_1348_OVERFLOW                               /* FhG: fix BASOP overflow in hq_lr_dec(), brings floating-point code inline with FX */
 #define FIX_587_DEFAULT_REVERB                          /* Philips: issue 587: inconsistent default reverb parameters across renderers */
+#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 BASOP porting switches ############################ */
 
diff --git a/lib_dec/core_switching_dec.c b/lib_dec/core_switching_dec.c
index 7ed7cc5298710a0ec25ee366751300d8ac313a2c..eed017087c7b70ab8148d204b7d5f80d0bdeeb05 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 808cb2628cb6b1a48c06d9cbf5a295b0be1464f4..999e4e4725ef0d441fcd0f2ba72c9c82a26f223b 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 */