WP Multena validates source and target, previews tables, uploads and replacements, then creates the copy as a controlled background job.
The problem
An existing subsite needs to become a complete, adjusted copy. Manually copying tables and changing URLs makes that unnecessarily fragile.
Without a specialised plugin
With WP Multena
What this gives you
Every new copy follows the same reviewable process.
URLs and paths are changed in a WordPress-aware way without breaking serialised values.
Progress, warnings and failures remain tied to the relevant processing step.
Review dry run, safe search and replace, background processing and reporting before using WP Multena in production.