Groups are duplicated automatically and somes groups are converteds to posts.

Hey everyone,

Did anyone have problems with automatic duplication of groups?
I noticed that some groups started to appear as posts. Did this happen to any of you?

I`m using a external script (by @jessepearson) to sync modified groups automatically. Do you think it can be causing this error?

function lgr_sync_acf_fields() {
			
					// vars
					$groups = acf_get_field_groups();
					$sync 	= array();
				
					// bail early if no field groups
					if( empty( $groups ) )
						return;
				
					// find JSON field groups which have not yet been imported
					foreach( $groups as $group ) {
						
						// vars
						$local 		= acf_maybe_get( $group, 'local', false );
						$modified 	= acf_maybe_get( $group, 'modified', 0 );
						$private 	= acf_maybe_get( $group, 'private', false );
						
						// ignore DB / PHP / private field groups
						if( $local !== 'json' || $private ) {
							
							// do nothing
							
						} elseif( ! $group[ 'ID' ] ) {
							
							$sync[ $group[ 'key' ] ] = $group;
							
						} elseif( $modified && $modified > get_post_modified_time( 'U', true, $group[ 'ID' ], true ) ) {
							
							$sync[ $group[ 'key' ] ]  = $group;
						}
					}
				
					// bail if no sync needed
					if( empty( $sync ) )
						return;
				
					if( ! empty( $sync ) ) { //if( ! empty( $keys ) ) {
						
						// vars
						$new_ids = array();
						
						foreach( $sync as $key => $v ) { //foreach( $keys as $key ) {
							
							// append fields
							if( acf_have_local_fields( $key ) ) {
								
								$sync[ $key ][ 'fields' ] = acf_get_fields( $key );
								
							}
							// import
							$field_group = acf_import_field_group( $sync[ $key ] );
						}
					}
				}
				add_action( 'admin_init', 'lgr_sync_acf_fields' );

Start with the reported lgr_sync_acf_fields function, its admin_init hook, and the acf_import_field_group call. Reproduce the behavior with the external synchronization script and inspect whether it duplicates groups or converts them into posts. Done means the cause is identified and the affected behavior can be verified as fixed or ruled out.