trill endings (in measure ends...)

Hi every body,

I think that has been already asked, but I don't know where....

I'm recopying a music piece for flute and piano, and as usual for flute parts there are some trills with "trills ending"..... I can put them in the same measure when the trill doesn't last the whole mesure..... but I can not (without using a second voice) make it when the trilled note lasts all the measure.....

For now, I made a second invisible voice but :
* when I try to import the file in nightly builds I have to control and delete all the "second" voices again.....
* the page layout is some not professionnal with invisible second voices transformed to space ..........;

Thank you,

Lamardelmy