Hi T'
(In essence, what's already been said by SGIII.)
"cells outside the boundaries of iWork tables have been removed"
The message means exactly what it says. Your Excel table is too large to fit into a Numbers table.
Reduce the number of (active) columns in the Excel document to 255 or fewer.*
Reduce the number of (active) rows in the Excel document to 16 300 or fewer.**
Then try importing to Numbers.
You could also try splitting (a copy of) your Excel document into two "worksheets". I have not tested that process, hence the advice to try it with a copy of your doc.
Regards,
Barry
**Actual number of possible rows is rounded down to nearest 100.
*Both of these are absolute maximums for the number of columns and rows. Practical limits are much lower, and Numbers will slow down appreciable long before these limits are reached.
B