We are currently using Trados version 2014 and 2-15 and need to sort out the duplicated TUs filter of TM.

Actually we are carrying out a TM maintenance process to delete the duplicated TUs.

 The message said that "No translation unit found" after we had seen the results with "potential duplicates only" filter.

However, when we switched to the entire TM searching, there is still another TU that is identical to what we are searching for, but it did not appear in "potential duplicates only"

Does anyone know the reason for this case and how we can manage Trados to show all the duplicated TU when searching?

Moreover, are there any methods that can help us see all the duplicated TUs at once, without having to keep pressing “next page” on the toolbar?

We have heard about the TM maintenance upgrade in Trados 2021 but do not know if the upgrade can help in this case.

Hope to receive your advice.