In that case the location of variable A will be used to determine the value of the location attributes. After that, the secondary validation will run for validating variable B which will mean that the location of this variable will be used.
Chainage Location Sets (since 2020.02)
Since 2020.02 it is possible to use time dependent attributes to determine a longitudinal profile based on a chainage attribute.
The longitudinal profile will be visualized with all chainage locations that are part of the profile at any time in the period of the time slider.
When at a specific moment in time a location is not part of the profile a missing value will be shown in the table, but the graph will just connect the line to the next location that is part of the profile.