Prior to 4.2.1 I could highlight several tracks in a collection and when opened, I would see the totals for points, distance, area, etc. for the combined tracks. Since 4.2.1 (and now 4.2.2 also) the totals do not appear.
I currently have 7 tracks highlighted covering several hundred miles over a large area. The details window shows:
Title Bar: 7 tracks selected
Summary
Points: 0
Distance: 0ft
Area: 2.1 sq mi
Elevation
Ascent: 16675ft
Descent: 16812ft