Unexpected updating of records

Question

Here is my simplified case:
I have a table with three fields: ID, F1 and F2 and create a Form on Table with Report. The report is on Page 1 and the form on Page 2. Assuming that I have three records. The unexpected behavior I experienced is as follows.
I open the first record by clicking the ID hyperlink, populate F1 and F2 with the values of ABC and 123 respectively, and save the record. And then I open the second record, populate F1 only with a value of EFG but without putting anything in F2, and save the record. What scares me to death is that the second record turns out to have F2 populated with a value of 123 too.
I wonder whether the problem I have experienced is because I failed to clear cache of Page 2 when starting to work on the second record. Also does it have anything to do with the different choices of Source Used, “Only when current value in session status is null” or “Always, replacing any existing value in session state”?
Your help will be deeply appreciated.
Edited by: Sun2 on Oct 28, 2009 5:43 PM

Answer 1

Dear Varad,
Thank you so much for your reply, which did answer my question. Yes, my Source Type is 'Database Column.'
Since there are only two options for Source Used, may I ask when “Only when current value in session status is null” should be chosen? Just as someone else mentioned, there is not much documentation about Source Used.
Thank you again.
Edited by: Sun2 on Oct 28, 2009 5:40 PM