The question for the inadequacy of transcripts

[CuteGold0407]

Thanks for developing this amazing tool !
I recently used stingtie to assembly the transcripts of tumor samples and gained some transcripts. But they didn't contain the junctions I extracted from the same samples by regtool, just like
by stringtie:
chr17 StringTie exon 7670609 7670715 1000 - . .....
chr17 StringTie exon 7673535 7673608 1000 - . .....
chr17 StringTie exon 7673701 7673837 1000 - . .....
......
by regtool(the junction file):
chr17 7670715 7673701 .....(it means from 7670715 7673701 exists one intron)

and as for my understanding, it's supposed to have a transcript like:
chr17 StringTie exon 7670609 7670715 1000 - . .....
chr17 StringTie exon 7673701 7673837 1000 - . .....

Thanks for any reply!