Numbers - Strange Table/Sheet behaviour

Question

I have a simple document open: one worksheet with a table for bank statement analysis.
I looked at the side bar and saw under the Sheet arrow that there were 2 identical tables - Table 1 and Table 2
Perhaps I had duplicated the first table as Table 2 was a copy.
I selected Table 2 and pressed deleted.
Table 1 then changed to a completely BLANK table with all the information lost - hours of work.
I pressed Command Z to undo - but this did not restore the deleted work or any of the information.
Luckily I had not saved the delete so saved the document without changes and thank goodness - all the original work was still there - table 1 and table t2
duplicated
I save this document as a test copy and then tried deleting the extra table 2 - same thing: all of table 1's contents were also wiped.
This time UNDO worked and both tables were restored.
THen I tried deleting Table 1 - this WORKED and Table 2 is left with the correct information.
I would appreciate if anyone who has an explanation could offer it
best
MS

Answer 1

MS,
I suggest that you take a look at the contents of the cells by clicking on a cell and looking at the Formula Bar to see if the data is literal or computed. You may find that the display in one table is computed from the data in another table.
Jerry