Source Migration
Seamlessly transfer your library series and reading progress between different sources.
Why Migrate Sources?
Online manga and light novel sources occasionally experience downtime, domain changes, or cease operations. The Migration tool allows you to switch a series from an old or broken source to a healthy active source without losing:
- Your read chapter history and progress.
- Your bookmarks and custom notes.
- Your category assignments and tracking bindings.
Single Title Migration
To migrate an individual series:
- Open the series Details page from your Library.
- Tap the three-dot overflow menu in the top right corner.
- Select Migrate.
- Wammy will search your other enabled sources for matching titles.
- Tap the matching series on the target source.
- A comparison dialog will display:
- Total chapters on the source vs target.
- Latest released chapter.
- Select your migration options (e.g. Delete old chapters, Copy categories, Copy tracking) and tap Migrate.
Bulk Source-to-Source Migration
If a source shuts down entirely or you want to migrate all series from a specific website at once:
- Navigate to Browse > Manga Migration (or Novel Migration for light novels).
- You will see a list of all sources that currently have series saved in your Library, along with the count of series.
- Tap on the source you want to migrate from.
- Wammy will list every series belonging to that source.
- Tap a series to initiate automated cross-source search and matching.
- Review the match and tap Select this source to migrate immediately.
Migration Best Practices
- Check Chapter Numbering: Before confirming a migration, ensure the chapter numbering aligns (some sources include prologue chapters as Chapter 0 or Chapter 1).
- Clean Up Old Downloads: Toggle the Delete downloaded chapters option during migration to prevent duplicate offline storage usage.