I upgraded to 2.3.2. When I went into the manager, all Articles containers (and their Articles) had disappeared.
They were still in the database. It seems to affect both Articles 1.7.8 and 1.7.9.
I have dropped back to MODX 2.3.1 for now.
Tim
Can do, once I sign up for github and after I have rest (just been out at the local markets for a few hours).
Tim