Yes, this almost eternal residence time is causing your trouble.
Archiving is a process to keep data offline, it is not just an instrument to kill unwanted data.
It has a lot to do with laws and audit.
SAP has usually residence times of 30 days as default, hence I think this are already customized figures and you need to find and talk to the people who designed this in your company before you change such number.
You usually have a project in the beginning where you define the residence times of each object. Too early archiving has a big effect on your reporting.