Date / Time a record changes - Download (inc API)

When you are integrating systems together the time/date that data changed becomes important to ensure that you don't overwrite fresh data on another system. E.g.

I change a clients contact record on a friday in Totango.

• The following week I pull the contact details for the client via a standard weekly script. Let's say on Wednesday…and I upload it to Salesforce.com
• But on Tuesday someone updated that clients SalesForce record directly with the latest details.
• As i have no knowledge when the Totango update was made, on Wednesday I would inject and error into SalesForce, by loading the data from Totango

Now, If I had the record change data (time/date), not the download date, I could compare and download time/date from Totango, and rather than polluting the SalesForce entry, i would actual sync the data into Totango from SalesForce as the entry was more up to date.

Ask - Provide the record change time/date in as an attribute when downloading data via a segment or API.