There are two ways to migrate MLCS field values from server to cloud:
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Click anywhere on the resulting page and save the file, its extension would be “.xml“.
(??) Open the XML file using your preferred editor, and replace all instances of the server's MLCS custom field ID (ex: customfield_13243) with the cloud MLCs custom field id (??)
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Now you can go to Cloud version of plugin and Import Data (XML):
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