Lookup wizard - List page with search

Greetings,
Using PHPRunner 8.1
Lookup wizard - List page with search & autofill.

On the Add page I have a field which uses List page with search, everything works gr8, popup appears, I make the selection. The necessary autofill fields populate but when I remove the lookup field (selection) the autofill fields don't remove and I cannot delete those autofill fields as they are read only.
Thankx

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