Change a row into a part

[kevinpfromnm]

I might be missing something obvious but I need to make each row of a table-plus into a part.  I'd rather not have to build the whole row over again, but seems like I can't get it to recover the tr param content AND wrap it in the new tr tag (which is sadly needed as you can't use part on a parameter directly).

I've tried variations on <tr: replace><tr ...><param-content for="tr" />... with and without replace and with <tr: restore /> in place of param-content.  parameters does not appear to be available as a method within part either.