Multiple postmeta inserted incorrectly for a variable product

Overview of the issue

With the latest WCML 4.5.2, you might encounter issues where multiple postmeta fields like “_price” are inserted in the translated variation product upon update.

As a result, you might have a variation product which shows improper price for example – with the value prior to the update of that variation product.

Our developers are working on a fix for this.

Workaround

In wp-content/plugins/woocommerce-multilingual/inc/translation-editor/class-wcml-synchronize-variations-data.php
Change from:

		// Loop over the delated fields to clasify them by the field status:
		// - if the meta key exists for its variation ID, it is set to update.
		// - otherwise, it is set to insert.
		$delayedFieldsActions = [];
		foreach ( $delayedFields as $delayedFieldData ) {
			$fieldPostId                                         = $delayedFieldData['post_id'];
			$fieldMetaKey                                        = $delayedFieldData['meta_key'];
			$fieldMetaValue                                      = $delayedFieldData['meta_value'];
			$delayedFieldsActions[ $fieldMetaKey ]['meta_value'] = $fieldMetaValue;
			$metaDataByVariationId                               = Obj::propOr( [], $fieldPostId, $metaDataByVariationId );
			if ( in_array( $fieldMetaKey, $metaDataByVariationId, true ) ) {
				$delayedFieldsActions[ $fieldMetaKey ]['update'][ $fieldMetaValue ][ $fieldPostId ] = $fieldPostId;
			} else {
				$delayedFieldsActions[ $fieldMetaKey ]['insert'][ $fieldPostId ] = $fieldMetaValue;
			}
		}

to

		// Loop over the delated fields to clasify them by the field status:
		// - if the meta key exists for its variation ID, it is set to update.
		// - otherwise, it is set to insert.
		$delayedFieldsActions = [];
		foreach ( $delayedFields as $delayedFieldData ) {
			$fieldPostId                                         = $delayedFieldData['post_id'];
			$fieldMetaKey                                        = $delayedFieldData['meta_key'];
			$fieldMetaValue                                      = $delayedFieldData['meta_value'];
			$delayedFieldsActions[ $fieldMetaKey ]['meta_value'] = $fieldMetaValue;
			$metaDataByPostId                               = Obj::propOr( [], $fieldPostId, $metaDataByVariationId );
			if ( in_array( $fieldMetaKey, $metaDataByPostId, true ) ) {
				$delayedFieldsActions[ $fieldMetaKey ]['update'][ $fieldMetaValue ][ $fieldPostId ] = $fieldPostId;
			} else {
				$delayedFieldsActions[ $fieldMetaKey ]['insert'][ $fieldPostId ] = $fieldMetaValue;
			}
		}