mass upload of route determination

Hi,

I have a question with regards to a configuring the route determination, our question is not about configuring the route but having to replace one of the old routes records to a new route.

SPRO  LE  Shipping  Routes  Route Determination  Maintain Route Determination.

We have created a route and all the necessary setup in the spro, and we realize that there are more than 3000 existing old route determination records (i.e. in table TROLZ) which need to be replaced with the new route. It will be impossible for us to manually replace each of the route records on above SPRO path one by one.

Question:

1 u2013 I am thinking about using LSMW, and am wondering if this is possible because there are two method in LSMW:

Method 1 u2013 Standard Batch/Direct Input. Here the Object drop-down box field does not have route determination object as it only have all the standard master data (i.e. material master, vendor, PIR, etc).

Method 2 u2013 Recording.  How to perform recording as this is a configuration and not a business transaction like open PO, SO with transaction code?

Please share how to upload this new route and if LSMW is the right way, I am stuck on either the method 1 or method 2. Or is there any other way beside LSMW (please describe detail).

Thanks

Tuff