Should session refresh be checked to override last-touch channel?

Hi All,

I'm currently working on implementing marketing channels for our organization & lately we have noticed that 'session refresh' share goes beyond 20% of the overall traffic.

We are also taking few measures to correct our internal filters and processing rules. But, for this case, should session refresh channel be checked to override last-touch channel which could be causing it to inflate?

If not, then what could be the reason for the higher number of session refresh? We have a lot of sites with different domains like: abc.com/ca, abc.com/ch, abc.com/de & there is cross pollination between them. It could be one of the potential reason but not likely to be true.

Thanks

M