I found the problem and one solution:
The problem:
Query is Closed when is in Insert mode and RecNo get value 0.
Then when i Edit one record is inserted.
Solution:
Before Close the query execute a Cancel method.
Now, RecNo is rigth with value 1.
Hope this help anyone, thanks.

--- In IBObjects@y..., mikel@b... wrote:
>
> With BCB5 and IBO 4.2E when we call Edit() method of TIBOQuery
> component it makes an Insert() instead.
> Debugging values of Query->RecordCount before Edit we have value 1
> (fields with values) and after Edit method we have 2(blank record).
> What is happening? please send us any suggestion,
> Thanks in advance, Mikel Iridoi Olaizola, BIGUN, S.L.