Hi there,
I have a similar issue - described in this thread:
It seems, that anonymous contacts are not merged under certain circumstances as they supposed to. (logically…)
For example as in the thread described:
- anon user browse the page
- email added by API (at this point it should not be merged)
- new contact created
- welcome email sent out
- email opened, cookie found, contact NOT merged with prev anon contact.
I would love to see if this is expected behaviour.
Joey