Updating Component is removing all Selected values

Problem: We have made some changes to a compnent and then due to some business reasons we have to revert back the the changes.so basically at this momonet the component is in its original state. Now when we are opening pages which are using this component we are getting a prompt to update to overwrite the component as expected. But when we are slecting the option to update the component , all the selected values are getting removed. This component contains a multiselect option with values being populated from an external. The values are getting populated correctly but we are just losing the selected values. There are thousands of pages using this component, has anyone came across this kind of situation.

Note:- i have tested with other component the same test case and it worked there,ie. values were retained.

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Comments

Garth McMillan

There is only one reason I can think of for a component to lose it's values (apart from selecting "overwrite" or "reset" or whatever the option is when updating - which resets to original state) and that is when the Datum ID changes. It may also occur if the Datum is moved into a different Group, but I'm not sure about that.

Are you certain nothing has changed with the external (generator) code?

.pages are just XML files so you can open them up and look at what data is changing with that component*. It may assist you with finding the cause. We have manually altered components by this method when we've had to do significant, breaking, updates to a large number of components whilst preserving (or changing data) - though obviously test it well before applying across the site.

* When we did it, some of the component properties, such as the component hash could be removed (left blank), and LiveSite would regenerate it on next save.

nipper

The other possibility is that you changed yout Datum XPATH. Happens to people with DCTs/DCRs ofter. They change the XML form a little and then the existing data isn't there anymore.