Derivating massive item between 2 trackers

To create lower level justification we would like to

1. filter item in the upper level tracker
2. select and send those item to a lower level tracker
3. Add a reference link between lower and upper item

the 2 trackers being already configured with a reference link

I manage to complete step one and to with the copy to function, but did not find a way to make the reference link, there is only an association link proposed