[Second attempt to send]
When institutions migrate from one repository platform to another, they are obviously concerned that the metadata from their records transition as completely as possible.
However, it doesn't always seem to be the case that the "persistent URLs" that were coined by one repository are kept live by the next repository (or an adjunct piece of software). The effect is that all the legacy links break when the old service is switched off.
This seems to be a fundamental issue for services that are supposed to supply "sustainable access" in an "interoperable" fashion, precisely to allow maximum flexibility for the users!
Does anyone have any experience of this? What do platform developers need to do to make the smooth transition of legacy URLs "really simple" as opposed to "technically possible"?
Les Carr
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