There are third-party plugins you can use to migrate Beaver Builder sites to a new domain or location, but you can also migrate manually if you are careful about a couple things: updating the database and clearing the Beaver Builder cache. See the WordPress codex for information about migrating sites manually, and pay attention to the following sections.
Always use serialized search & replace
It’s important to use a serialized search and replace tool when changing URLs in the WordPress database, because many plugins, themes, and WordPress itself store arrays and objects in a serialized format, which becomes corrupted if you try to do a standard search and replace. If you use a backup plugin, make sure it uses serialized search and replace.
The proper way to manually migrate a WordPress database is by doing a serialized search and replace on the database. The fine folks at interconnect/it offer a Serialized Search and Replace tool. Make sure to use version 3.1.0 or higher. If you use a plugin, we recommend the Better Search Replace plugin by Delicious Brains.
Always make a backup of your database before running a search and replace!
Clear the Beaver Builder Cache
The Beaver Builder plugin caches image and asset URLs, so it’s also important to clear the Beaver Builder cache after migrating.