Connection of chords progression.

I do get a red vertical line in the phrase editor and the bass won't repeat it self over the progression now?
What interpretation settings to made when using this autochord/bass method used on separate symbols ?

Can the tutorial be updated for autochord/bass, because there is so much changed ?

Now you get the problem that in a chord progression, that the difference between one chord and another following it (almost?) cannot be heard through the voiceleading.
This is also not what you want.
- first know how to set the interpretation ?
- make differences in the chord progression for the chords that almost coincide 

I based the making of the chords on the outdated tutorial. 
(https://users.cognitone.com/tutorial/how-make-4-voice-wide-range-auto-c…)
Instead of auto chord or auto bass feature in Synfire, create your own chord figure.
Will take a closer look at the interpretation settings and compare them with those in the outdated auto chord/bass tutorial.
For sustain string chords, the standard chords ( triads) are already sufficient, so no sus or aug or dim, but inversions is ok
Maybe also the seventh chords, with these you get a 5 note chord.
Experiment further and aim for solid chord transitions.