I normally edit my YouTube video's in the following manner: I start with a teaser: a short extract from the video to entice viewers to continue watching. Then I insert one of my previously edited PD intro sequences. Then the rest of the video follows and right at the end of the video I again insert another previously edited PD sequence, a closing or exit sequence.
In PD 16 I could insert these previously edited intro sequence and closing sequence to a new project and could also edit those sequences, because these projects were inserted with all their tracks and individual shots visible.
In PD 17 when I try to insert a PD project (an opening intro sequence) PD inserts this PD project as one "video": a produced/mixed pdf file on 2 tracks only (sound and video). No waveform is visible on this audio track and no individual shots used in the intro sequence is visible. Only one sound track and one video track.
Even the titles I have added to these intro and closing sequences is incorporated/mixed onto the video track.
This causes problems when I want to edit these inserted sequences in the existing project, for example when I try to move the music to overlap the shot just before the inserted intro.
I therefore cannot edit the titles in these intro and closing sequences to update info of my new project.
IWhy is there no option that I can still insert a PD project into the currently edited project with all the tracks of the inserted project visible and editable?
This is rendering PD inserts into currently edited projects almost impossible to edit.

Please help.

(PS to my computor info: I have installed a second hard drive to this computor)