Calendar links dissapeared after moving branch to TLI

I had a branch under a TLI, but now I moved the branch to form a new TLI. That is:

BEFORE:

BUSINESS
..Business 1
..Business 2
HOUSECARING
FAMILY

AFTER:

BUSINESS 1
BUSINESS 2
HOUSECARING
FAMILY

The problem is that ALL my tasks that in business 1 that were linked to the Palm's datebook lost the link.

That is, LB sees them as "By Calendar", but they appear "Not in Calendar", although if I go directly to the palm's datebook, they appear correctly there, with the same spelling, and even with the "LBxxxxxxxxxxx" number in the "notes" field.

Is there any way I can re-link them automatically instead of going one by one?

Thanks!

Greetings from Cholula, Puebla, Mexico and sorry for my bad English. Hope you understand me :-)