Shareaza

When u add magnet link with btih and tracker as additional source to existing download, Shareaza will ignore "tr" field in magnet

Трекеры добавляй на странице трекеров в свойствах загрузки.

There is no "tracker" page in download properties. Download was created using BTIH-only magnet.

Well yeah, because that file is categorized as an HTTP based download. Upon creation the download type is charecterized ... once it is deemed a torrent download from the begining it contains the tracker detail tab in the properties. If it was deemed initially a HTTP based download it does not have a tracker tab as that is not required.

If a person obtains a tracker and btih for that file than the least that can be done is to add the btih and not the tracker. something worth discussing whether to implement or not.

I think, each file should have the tracker tab by default - only on downloads without tracker, it should be grayed out - or without information inside. Like this, users could also add trackers manually in some special cases, which can be useful from time to time.

If try to add new download by magnet with same btih(or else maybe) tracker tab will be enabled.

If download was created using ed2k:// link there is no "Torrent" sheet in properties

Shareaza can parse URI with BTIH if BTIH is the only hash used. If magnet has additionally one or more other hashes - Shareaza will ignore BTIH and download will be created with no possibility to add tracker
And when Shareaza find something (for example "Ubuntu 9.10") with BTIH available, it will not add BTIH to magnet.