No. Motivation and source codes are direct feeds from your pick lists in OLOD.
When you setup a donation page inside of RaiseDonors, you will be provided with a pick list of codes directly from your OLOD account.
The drop down list on the page builder isn't showing all of my source and/or motivation codes, why?
RaiseDonors connects to OLOD real-time when you are editing a page. The source and motivation codes must be flagged as "active" to be returned to RaiseDonors. Codes flagged as "inactive" will not be returned. For source codes, RaiseDonors is querying the pick list "customFieldMap[source]" and for motivation codes, it's querying the pick list "motivationCode".