Autocomplete rule : AssignmentDFF value getting wiped off in correct mode

Hi All,

We have created an Object default type Autocomplete rule to set default value to DFF in Assignment page .

Autocomplete rule is working fine with an Assignment update mode. However, in correct mode of assignment value of DFF getting wiped out . the expectation here is while doing any assignment correction the value should remain as it stored. also we see the slowness of assignment page for every transaction after implemented below code

Below is the snippet of autocomplete rule.