Im my form (MONEY) i have one old field CURRENCY (type string) with several pre-choices (usd, eur, lkr, etc).

I have created new form (currencies) and report with these choices (usd, eur, lkr etc) to use it like lookup. I have there such fields as: Country, currency code.

In my MONEY form i have created new lookup field NEW_CURRENCY (Bigint) witch takes data from new form (currencies) with specified criteria (country).

But bulk edit do not allow me to edit this lookup field in old entries.

What should I do then?