Merge pull request #6987 from yuki-tei/patch-12

Update 08_mtk_command_options.mdx

Author: nidhibhammar

product_docs/docs/migration_toolkit/55/07_invoking_mtk/08_mtk_command_options.mdx

@@ -403,6 +403,10 @@ Use the migration options to control the details of the migration process.
 
 Truncate the data from the table before importing new data. Use this option with the `-dataOnly` option.
 
+!!!note
+If `-truncLoad` is specified, all indexes and constraints are dropped before data load and recreated afterwards. Hence, if the data load fails, it may lead to a lack of indexes, constraints and triggers. Manual intervention might be necessary, depending on the situation.
+!!!
+
 ### `-enableConstBeforeDataLoad`
 
 Include the `-enableConstBeforeDataLoad` option if a nonpartitioned source table is mapped to a partitioned table. This option enables all triggers on the target table, including any triggers that redirect data to individual partitions, before the data migration. `-enableConstBeforeDataLoad` is valid only if you also specify the `-truncLoad` parameter.