Query to determine stats on fixVersion changes

[chassidy rentz]

I am trying to determine with a query how many defects have had their fix version changed during each week of a 4 week development cycle. The following query for the entire 4 week cycle returns 27 records. However, when I try and break it down week by week by changing the dates, I still get the same 27 rows returned? I don't know what I am doing wrong. Any help is appreciated.

project = MIE AND issuetype = Defect AND fixVersion was 2020.02.08 AND fixVersion != 2020.02.08 AND fixVersion changed after "2019/12/15" AND fixVersion changed before "2020/01/14"