Bulk load WTPart IBA attributes - How not to reset End item value to No (false)

Hi all,

I am trying to update parts IBA attribute values using LoadFromFile Framework. Otherwise seems to work but csvBeginCreateOrUpdateWTPart method (or how you call it) will reset End Item value to No. There is no <csvenditem> tag under csvBeginCreateOrUpdateWTPart.

How a) not to reset End Item value to No or b) update End Item value (parts current End item value is in Excel)?

Windchill version is 11.0.