Hi,
Mean missed records have you noted? if yes then you can use full dtp and use proper filters.
Load the data form DSO(missed wsa exist at DSO) to Cube.
If you need to reload missed data form source then you can run repair full request with proper selections and continue your delta loads from PSA-->DSO-->cube.
if client accepts then better delete cube whole data and reload.
coming week is chrismas eve, so client will be on leave. but its depend contry.
please check that possible.
Thanks