help with data import

[max1ci6]

Dear sirs

I have a question about data import , if I have an hole in my database (due to a blackout for instance) can I import , for instance , first 30 min of current session or do I have to import all today's data up to the time of importing ?
I mean if another NT user gives me first 30 min data I will be able to merge them with my collected data?

Rgds