WhatsApp had previously allowed chat migration on a single phone number only, but this restriction is going to be removed soon. According to a sources, the messaging app will soon let you move your chats to a different phone number, making it easy to migrate data between different WhatsApp accounts.
This will not only allow you to migrate chat history to different WhatsApp accounts, but to different platforms as well. WhatsApp on Android currently does not let you recover backups from iCloud and WhatsApp on iOS does not allow it from Google Drive either. The messaging app’s upcoming feature should remove this barrier, making it possible to transfer WhatsApp data between iOS and Android.
The migration will also include media transfer such as images, videos, voice messages, etc. However, migration between different accounts or platforms will only be possible if you link your other phone to your WhatsApp account.