Little League - other league participation

[RustyWinslow]

Can anyone help me with the official guidelines concerning
Little League players participating on other weekend travel teams. I, myself, am involved in Dixie Youth in our hometown, yet we have assembled a weekend (travel) team competing in USSSA tournaments. Dixie Youth guidelines are open to this as long as it does not interfere or conflict with our weekly schedule, and is stopped 2 weeks prior to the beginning of All-Star tournaments. However, one of our players from a local town is involved in Little League. He has now been told his son is no longer eligible for Little League All-Stars since his son played with us after HIS season started.

Is this a local Little League bylaw or is it addressed in the official rules governing ALL Little League? I am not able to access the LL rules, and can only find mention of this topic on another board's "frequently asked question" page (where it kinda sounded to me to be the same as DYB).

May not be the place for this question, yet I figured one of you might know.

Am looking for a rules-section-reference and a place to find it.

I feel responsible for the situation, yet the boy's father asked the obviously non-knowing coach prior to playing with us, and was led to believe it was o.k.

Thanks for the help