Included in the SYNCHRO 4D Pro 6.5.4.35 release, Asta ProjectProject (Task) Bar name is now imported as a Task user field for improved interoperability, to be distinct from the Task Name field. 

Before this release, Task Name concatenated Bar name and Task name from Asta Powerproject. Starting from 6.5.4.35, Task Name in 4D Pro matches the source Task name from Asta Powerproject and Bar name is imported as Task user field named Powerproject Bar name. Users can see this user field and values in Task Properties -> User fields when Task is selected. Or users can display it as a column in Task table by right-clicking on column headers and choosing Customise Columns:

This Task user field Powerproject Bar name is not exported or Synchronised to Asta Powerproject as a user field, but its values are used to set Bar names.