Planned end date on project tasks clearing out on form loadDescription Planned end date on project tasks clearing out on form load. CauseCustomized client scriptResolutionWhile debugging this, I was able to find that your customer Check Valid Task Start Date and Set End had been modified and was skipped on your recent upgrade (https://XXXX.service-now.com/sys_upgrade_history_log_list.do?sysparm_query=file_nameLIKE613dcdc1eb23300060bbafcef106fe1d). We reverted this to OOB (Out of Box) and the Planned End Date was staying populated correctly but then noticed an error message displaying under Planned Start Date. That then led us to the PmClientDateAndDurationHandler UI Script. We noticed this was not OOB either so we reverted that code. We also noticed a console error that was stemming from this FixedTableHeader UI Script. We have deactivated it and that seems to correct the issue. We are unsure of the effect disabling the last UI script will have but with the customization in place, this is how we were able to fix this.