Druid Tiering

Hi everyone,
we are setting up a tiered druid (hot and cold nodes). I have a historical node with a tier=hot and the rest have the _default_tier. I created a Period Load Rule that loads anything in the P1D period into hot otherwise defaults to _default_tier. However, I am seeing segments from _default_tier that are outside my period being stored on my hot historical node. Is there any configuration settings I am missing to ensure that my hot node only contains the data from that period?

Regards

Jamil