Iterparse truncating XML elements

I have a large XML file (about 600 MB) that I am trying to parse using cElementTree with iterparse. First time attempting this.

I am iterating on 'product' tags and elem.clear()-ing after I process each product. Within my parsing I have a function parse_trips which uses a for loop to parse tags within tags (each product could potentially have hundreds of these which are each hundreds of lines long).

for trip in trips:
    dump(trip)
    get_date(trip, product)
    set_price(trip, product)

However, when I dump(trips) I see that these tags are getting truncated/closed out early without any error being thrown. The parser seems to reach a maximum length for the elem in memory and then just won't hold anymore.

The raw xml:

        <trip>
            <code>text</code>
            <name>text</name>
            <image>img.jpg</image>
            <date>2014-08-10</date>
            <pricing>

            </pricing>
            <itinerary>
                <code>1</code>
                <events>
                    <event>
                        eventInfo 1
                    </event>
                    <event>
                        eventInfo 2
                    </event>
                    <event>
                        eventInfo 3
                    </event>
                    <event>
                        eventInfo 4
                    </event>
                    <event>
                        eventInfo 5
                    </event>
                    <event>
                        eventInfo 6
                    </event>
                    <event>
                        eventInfo 7
                    </event>
                    <event>
                        eventInfo 8
                    </event>
                </events>
            </itinerary>
        </trip>

The output I am getting is while there might be 6 such groups, when I reach the second trip in the group, dump(trip) the looks like this:

<trip>
    <code>text</code>
    <name>text</name>
    <image>img.jpg</image>
    <date>2014-08-10</date>
    <pricing></pricing>
    <itinerary>
        <code>1</code>
        <events>
            <event>
                eventInfo 1
            </event>
            <event>
                eventInfo 2
            </event>
            <event>
                eventInfo 3
            </event>
        </events>            
    </itinerary>
</trip>

and every later trip is gone. I tried looping through and just incrementing an integer i to count how many tags there are, and it only reaches the second one which it truncates and then ends the for loop.

Is there a way to view/configure the size of the element iterparse can grab? Or a way to use iter again once I get to trips to grab ALL child nodes of ?