SmartFTP replace files without conformation

SmartFTP replace files without conformation and don't resume file downloads after reboot.

Yesterday I partialy download file (~300 of 700 Mb), stop download, close SmartFTP and shutdown the PC.
Today I try to resume downloading, but SmartFTP replace the yesterday downloaded file and start download from zerro position. Withow any confirmation.
I's happed two times.

I's happed only if I shutdow/restart my computer. If I only restart SmartFTP download process startted correctly.

Any ideas?

PS: The remote server have support for resume file downloading.
SmartFTP v 2.0.1000
WinXP SP2 Professional 32bit on AMD Sempron 2600+

PPS: Sorry for my English

WBR, Dmitrii