Sorry for the tardy response and note of thanks....I just saw this response. I am new to modeling so trying to learn my way. I appreciate the help. Since this is an existing condition, I agree with Chopsaw, the ROI vs time is not worth it. Condition will certainly be noted once I get to CDs. Avoiding depiction of the non-existent rim joist will be my victory.
Good to know the Floor Beams option as well. Should certainly help me down the road. Thank you both for your willingness to respond.