ipup summarizing multiple similar subnets to higher subnet

Hi @cyclaero 
I've noticed, that ipup sums up multiple similar subnets to a higher subnet.
For example the CH-subnets `217.26.32.0/20` & `217.26.48.0/20` will get summarized to `217.26.32.0/19`.

Although both subnets are inside ripe's database.

This is very unpractical for our usage. Is it possible to somehow disable the summarizing?

Thanks