API: history.get and keep history limit

[r-br]

I use the history.get API method to retrieve data from the database. Everything is fine. But I have an item which has "keep history" set to 60 days, and it seems that the history.get API won't retrieve data before 60 days... am I correct?

Then, how could I retrieve such data?

Thanks in advance.

EDIT:
If it matters, I'm using Zabbix v1.8.3.