diff --git a/thirdparty/ffs/ffs/CMakeLists.txt b/thirdparty/ffs/ffs/CMakeLists.txt
index 435def03ce..d4a96a674f 100644
--- a/thirdparty/ffs/ffs/CMakeLists.txt
+++ b/thirdparty/ffs/ffs/CMakeLists.txt
@@ -178,7 +178,7 @@ option(FFS_USE_DILL "Enable Dill code generation" ON)
 if(FFS_USE_DILL)
   find_package(dill 2.3.1 REQUIRED)
   set(HAVE_DILL_H ON)
-  set(FFS_CONVERSION_GENERATION_DEFAULT 0)
+  set(FFS_CONVERSION_GENERATION_DEFAULT ${DILL_HAS_NATIVE_DCG})
   set(DO_DCG TRUE)
   target_link_libraries(ffs PRIVATE dill::dill)
   list(APPEND _pkg_config_private_reqs "dill >= ${dill_VERSION}")
diff --git a/thirdparty/ffs/ffs/ffs/ffs_conv.c b/thirdparty/ffs/ffs/ffs/ffs_conv.c
index 8b20c38e6f..d1ea2e0d0b 100755
--- a/thirdparty/ffs/ffs/ffs/ffs_conv.c
+++ b/thirdparty/ffs/ffs/ffs/ffs_conv.c
@@ -1531,6 +1531,18 @@ new_convert_field(char *src_field_addr, char *dest_field_addr,
 	    if (conv->iovar->type_desc.type == FMType_pointer) {
 		array_of_pointers = (conv->iovar->type_desc.next->next->type == FMType_pointer);
 	    }
+	    /* changes here */
+	    if (data_already_copied &&
+		!conv->src_field.byte_swap &&
+		(conv->src_field.src_float_format == conv->src_field.target_float_format) &&
+		(conv->src_field.size == conv->dest_size) &&
+		(conv->subconversion == NULL) &&
+		(next->type != FMType_pointer) &&
+		(next->type != FMType_string) &&
+		((conv->src_field.data_type != string_type))) {
+		/* Nothing but data movement required */
+		    break;
+	    }
 	    for (i=0; i< elements ; i++) {
 		new_convert_field(new_src, new_dest, conv_status, conv,
 				  next, data_already_copied);