I have a problem with Session Albums (not Smart Albums).
(Windows)
I store a particular session on D:\Photo\201704_sessionname\ with regular session folders (Capture, Output, and so on) inside.
Inside this session i have created a few Albums to sort pictures.
After an editing and exporting necessary pictures i moved it to another drive (D:\ is pretty fast but not-so-big SSD) - simply copies to F:\ new path became F:\Photo\201704_sessionname
Previously, if i needed some files from this session - i can simply open it and work with it on new location.
But in C1 V10 i've discovered two things:
Firstly, C1 shows an image placeholders ('The selected picture is either unavailable or... bla-bla-bla') in Browser in EVERY album - like i moved/deleted this files outside of C1.
If i choose a folder F:\Photo\201704_sessionname\Capture\Foldername - it shows all needed pictures (and all others too).
So, C1 ruined my sorted by albums principle.
Secondly, i've discovered, that in old session location - D:\Photo C1 created AN EMPTY folder structure D:\Photo\201704_sessionname\Capture - presumably trying to find 'missed' files there.
So, it looks like Album feature uses now Absolute and non Relative path?