Yes, some information can be twice in your ORCID record, for example in the Other IDs section. This information is not deduplicated by ORCID.
Publications added to the Works section of your ORCID record, will be grouped when they share an identifier, like the DOI: only one version is shown. You can set which version of the works you would like to display by clicking the Make preferred source box.
Do not delete duplicated information because it will be added again the next time data from the Pure repository is synced. If you don't want to show the information, it's better to change the visibility to Only me.
For more information, please visit the EUR ORCID LibGuide.
