If not all positions are displayed when opening a GAEB tender, please first check whether a saved filter is still available.
If a filter is still active, you can deactivateit by clicking on the x in thefooter of the table.
Please be sure to specify in the settings beforehand whether a filter should be saved and applied the next time you open a GAEB file. This can lead to confusion, especially at the beginning of the work with filters, because then of course only certain parts of the LV (which correspond to the filter) are displayed when opening a new LV.