In Q&A, I had a few databases where I would POST information from one Q&A database to another. Sometimes the element data in the receiving database was replaced such as a date. Other times an amount being received would be added to the pre-existing quantity (integer or dollar amount).

I am now thinking of implementing some of these in my Sesame databases and I am wondering how I should go about this. Should I use export/import or mass update or something else? I think export/import would do fine where the result was to be replaced but I'm not sure about adding the imported amount to the existing amount. Is this going to be a problem to implement? Also, export/import is a two stage operation, could it be done in one step with mass update?

I would appreciate hearing any general suggestions or warnings or examples from people that have more experience than me.
Glenn