MS Planner Data Extraction

[SORPN]

Wheneve I extract MS Planner data to excel to visualize them in Powe BI, The checklist section of each bucket has an issue in it. Coz  the checklist which are marked completed are not shown as such in Excel report. Can someone suggest me an alternative to visualize the data of checklist items whichever is completed from the incomplete ones, and perform graphs accordingly.