camt.053 is the ISO 20022 statement banks in many countries hand out as XML. Parendi reads it as it is, with no column mapping: the account is in the file. Banks in the US, Canada, Australia and Brazil hand out OFX or QFX instead, and that goes in without mapping too. For CSV and Excel exports the app works out the columns itself and remembers the mapping per format.
Re-importing a month you already have is expressly allowed: anything already stored is skipped, anything new is added. More about importing
