How can you identify these interfaces and nodes? Are they all the same machine type and interface type - or name - or are they the only interfaces you have at 1000? I think I would try to do this through the manage nodes/interfaces page if you can return all 200 interfaces through the search or filtering.
If not then before you can execute this very simple SQL update you will need to limit it to just these interfaces based on your above criteria. So start by getting a SELECT statement together that returns only the interfaces you want to affect then we can modify it into an UPDATE statement.
Orion SWIS
https://your hostname/Orion/Admin/swis.aspx
SELECT top 10 Alias, Caption, CustomBandwidth, InBandwidth, OutBandwidth, InterfaceCaption, InterfaceIcon, InterfaceID, InterfaceSpeed FROM Orion.NPM.Interfaces