Issue 9256

I use WinNT 4.0, SP6

Steps to reproduce problem:

1) Start a new text document in OO Writer.
2) Goto menu Insert->Table to insert the table. Enter 4 for number of Rows.
3) After insert the table, select cells [1st column, 2nd row] and [1st column, 
3rd row].
4) Merge these 2 cells using menu Format->Cell->Merge.
5) Click on cell [2nd column, 3rd row].
6) Goto menu Format->Row->Insert. Insert Rows dialog will pop up.
7) In Insert Rows dialog, kept default value 1 in Amount and After in Position. 
Hit Enter to insert a row.
8) Click on the merged cell (now it look like it covers 3 cells).
9) Goto menu Format->Cell->Split. Split Cells dialog will pop up.
10) In Split Cells menu, enter 3 for Amount, and pick Horizontal in Direction.
11) Hit OK, to split the merged cell into 3 cells. Now, the table look normally 
without any merged cells.
12) Select cells [1st column, 2nd row] and [1st column, 3rd row].
13) Merge these 2 cells using menu Format->Cell->Merge.

What we will see that the cells [1st column, 3rd row] and [1st column, 4th row] 
are merged, not the cells [1st column, 2nd row] and [1st column, 3rd row] as we 
selected.