Channel update not reflected in item modified date

[ElliottJPerry]

As per the Openactive RTPE specification section 4.4 Related entities...

Data from related entities can either be:

Embedded inside the parent entity. This requires the parent "updated" field to reflect the maximum value of all children - achievable via database triggers or similar.

Currently, Flex's implementation does not adhere to the specification because updates to channels are not reflected in the item modified date.