Watch My Domains SED v4 (RC02 and above) supports importing data from the previous v3.
It is very important to use a different database when installing Watch My Domains SED v4. Please do not reuse the v3 database. It will corrupt the data and make it unusable from both versions.
If you can’t use a different database, change the ‘table prefix’ entry for Watch My Domains SED v4 so that new tables are created.
Importing data from v3 is very similar to importing data from registrars. Create a data source profile in the administration panel and the use the ‘Add Domains’ option as usual.
You will need to provide the database access details of the version 3 installation. Please see here for more details.