Merging units from 2 properties

Hi!

When joining Booking.com it was not clearly communicated what property/unit is, i.e. their distinction.

Therefore, I registered 2 units which are at one physical location (2 apartments in one building).

Is it possible to merge these 2 units under one property, while retaining their scores and history (we have good marks, which I'd hate to lose).

I understand this would allow availability for small groups (~4 people) compared to the current situation, i.e. 2 units within the same property would be offered; this is not available now, since these two units, even though extremely physically close, are managed as two separate properties.

Best regards,

Nikola