Two rows displayed in worklist for the same orderId in OSM

Hi All,

We have two cartridge to handle multi orders (one single order xml will have multiple order types like provide, change, conversion etc). One cartridge will capture parent order and create its child orders in another cartridge. we are seeing one behaviour that when child order creation task is failed in parent cartridge with some valid error message and land into manual queue, and when we search that order in worklist we see two rows for the same order id, but when search that order through query page it is only one row.

Why this behaviour, can anyone please help me to understand this?