Find and replace chunk of elements in a table which matches a chunk in another table

I have a test data in table format (table A) and re-test data in also table format (say table B).

The re-test is a partial re-test, so B is not the same size as A.

A and B has common table headers.

What identifies the re-tested entities in B are the elements three table headers, say B (:, 9 :11).

B (:, 9 :11) is a subset of A(:, 9 :11). (A(:, 9 :11) being larger in size than B (:, 9 :11))

Both B(:, 9) (& A(:, 9)) are chacater data type while B(:, 10:11) (& A(:, 10:11)) are type double.

I need to find the row indices of A for which A(:, 9 :11) == B(:, 9 :11) and then replace the entire data chunk for these indices in A with the entire data in B,

I am strugging with find and replace and would appricatite some help.

Thanks.