Question about tensers extra attacks

[azrael]

I have a lvl 46 bane knight (17 sorc/ 22 bg/ 1 monk) I have 3 base attacks per round + 1 haste = 4 attacks. Tensers gives the same base number of attacks as a fighter of the same level and bonus attacks at caster levels 45 and 55. So I figure I should get 4 base + 1 haste + 1 extra tensers attack for caster level 45 = 6. The problem is i still only have 5 attacks per round, even though i am level 46 (caster level 45), which is the same number of attacks i have had all along. I tested it in the training arena, im not looking at the sheet. Is this wrong, or have i made a faulty assumption. I also tested it with my lvl 56 sorc, and he had 6 attacks per round, where I would have thought 7. Does tensers eliminate the haste attack?

if you need it login name Azrael1972, character name Az'Modayn