There's no easy way to migrate from rml to something capable of creating xls reports.
Meaning, you'll have to create a new report.
Depending on the report you need to migrate, you probably want to have a look at:
1) report_xls (https://github.com/OCA/reporting-engine)
2) aeroo (https://launchpad.net/aeroo)
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|Asked: 7/17/14, 8:07 AM|
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|Last updated: 3/16/15, 8:10 AM|