The only way I know of would be to remove the relationship between the two tables, or ditch the split form and use a main form/sub form relationship with linked Child and Master fields.
The more we hear silence, the more we begin to think about our value in this universe.
Paraphrase of Professor Brian Cox.
Don't use split forms, but this may help: there is a property on the table called Subdatasheet which you can set to [None]. In design view for the table, open the property sheet and it is there.
Thank you Guys!
Hmm i was trying to do what aytee111 wrote but it failed.
I think that i will change split form for simple form and add subform
Best Wishes,
Jacek