A Migration Note is a small credit line on a page that was imported from an older website. It records the original page address and the date and time of the import, for example:
Migrated from https://old-site.example.org.uk/walks on Thursday, 8 August 2026, 1:11:00 pm
The line is public, so visitors (and editors) can open the old page while both sites are running in parallel. It is not a content block you would add by hand on a page you are writing from scratch.
When a site is migrated, NGX adds a Migration Note row to each imported page. The default label is Migrated from. The row type also appears in the Row Type dropdown so you can open an existing note, change its type, or (rarely) add one if an imported page lost its credit line.
You do not fill in a rich editor. The note is the label, the source URL, and the import time.
Once the new site is the one members use, the old URLs no longer need to be advertised on every page.
Do not delete notes one page at a time unless you have a reason to keep some and drop others.