>I do not have any buttons that relate to navigating/appending records in the grid. Eventually it will just be triggered by kepresses (e.g. INS will add a new record, DEL will delete). So I do have to click on the grid to start navigating among any existing records.
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>I deleted all the tables in the form's dataenvironment, relying on code in the menu option that calls the form. This was just a wild guess, I can add the tables back to the form's dataenvironment - but I don't think that should be a factor at this stage?
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>Since I open the tables prior to the form, how does buffering and datasession enter into things? On the topmost item in the Properties window, named frsPurchase1, its DataSession is set to 1 - Default Data Session. BufferMode is 0 - None (Default).

Which is what it should be if you open the tables before the form.

I am at a lost here. I will have to go try something like this, before I help any farther. I always let the DE do its thing, and had the Datasession set to 2 - Private. Buffermode - 5 optomisic table

Hope the others are more help.