File upload to planning book

Hi,

We are trying to upload data into a planning book via a flat file. But not all data is getting uploaded.

Not sure if this is the reason, but we download data from the planning book and use an access database to get the updated information from multiple users, consolidate the data and upload it back to the Planning book by using the same format that it was downloaded. But not all the data is getting populated.

Does anyone have an idea why this is happening.

Appreciate your input.

Thanks,

RT