I don't think you can do it as is. RDNG treats the table as a whole, and will import the whole table into one single requirement.

Not sure how practical for your situation, I would suggest the following.
1. Add two columns to each side of the table.
2. For the first column, enter the keyword "BRSTART", "FRSTART", "NFRSTART" and etc. You can come up with other keywords, as long as they cannot be found in the original text.
3. For the last column, enter the keyword "BREND", "FREND", "NFREND" and etc.
4. Copy the entire table.
5. Paste it into the same or a new document, without the table structure. The end result should be for each row of the original table, there should be a paragraph starting with the "*START" keyword and ending with the "*END" keyword.
6. Import the modified document, and use the keyword option to pick out requirements. You can specify multiple sets of keywords at the same time for different artifact types. You may want to not import anything else (all set to "none" except for the Text Delimiters box).
7. (This is the hard part) open each newly created requirements and (optionally) change the title (BR1.0 and etc), and add the Must/Should to the Business Priority field - RDNG does not support modifying property values during import.

If you (or someone working with you) are good at coding, you may consider developing an application to parse the documents and submit the requirements using OSLC API.