Difference between NEW RECORD and EDIT RECORD form

[michi.for]

Hi all. thanks for support, i love this forum.
I have a question:
Is there a difference between NEW RECORD FORM and EDIT RECORD FORM?

In my case, when i create a New record, i forced many fields to "null" or "calculated".
If i want to use the same form, but with edit function, fields mustn't be set to "null" or "calculated" or i lose data.

So, my solution is to create identical double forms, but with these difference.

I know is not the best solution...but what's wrong in my thinking?

Thanks a lot.

 

[Minty]

If you make your forms default values Null Or Calculated they only affect new records at creation not any existing records.