Is it possible to copy multi-row variable data to another record?

We are currently working on building out a service catalog and we have a few items that will spawn a Requested Item that requires an approval. After that, instead of creating a Catalog Task we are creating a Change Request.

I have some code that will copy the variables from the Requested Item to the Change Request, but I just noticed that it is not copying over the multi-row variable set information. When I look at the table sc_item_option_mtom, I can see entries for the variables that are included in the multi-row set, but they are empty. I cannot seem to find where the multi-row variable data are stored.

Has anyone come across this before? Is there an easy way to copy this data, or make it easily visible on the Change Request?