question

I assume you use several racks on each aisle side. If you use a 3D model logic and a dwell time in the rack your request is really difficult, because of the events by the dwell time. The events have been already set to release the items. If you move an item by a taskexecuter it creates additional events again to be released in the future. Your simulation looks faulty because the item jumps back to the rack whenever a release event occurs.

The approach in such cases is to set a dwell time to 0 and hold the item in the rack. You do this by the Send To Port picklist option Do Not Release Item. Then you can release the item by the command releaseitem(obj item, num port). You release the item when the dwell time elapse or you need to get to an item deeper in the cell.

Your logic will cover which output port number the item is released to in your model.

1. Leaving the rack aisle
2. Sending the item to another cell in the same rack
3. Sending the item to another rack in aisle

Point 2 needs a queue object on the ASRS vehicle which uses a transport (ASRS) with the option preempt only and the highest priority in your rack aisle. The item is released to the output port directing to the queue on the ASRS vehicle and then this queue sends the incoming item to the rack again.

Another logic will set cells to stay empty in the involved racks until an item is unloaded to the right cell.