Thank you for your question.
It appears that you may have attempted to upload a file, but the upload was unsuccessful. However, I believe the question can be answered without the file.
When the transcription is double-spaced (BF 1.7), only actual tables arranged in rows and columns are single-spaced. Listed table formats (BF 11.16 through 11.18) are not included in this exception.
While this is not stated explicitly in Braille Formats, the intent of the exceptions in BF 1.7.1 is to eliminate blank lines between braille lines that are meant to be read together, both horizontally and vertically.
Regarding the question about boxes, BF 1.7.1e applies to tables whether they are enclosed in a box or not.