Hi Peru,
Never delete delta req which was failed at PSA Level, this also give some inconsistency.
After making req to red, if you trigger delta info pack, it may asks for repeat delta, yes and continue. it will fetch last delta records and present only.
which you deleted delta request was wrong. no need to worry.
You lost the delta records. so now you need to run repair full request with proper selections to full missed records.
Thanks
.