suggestions for first time sync?? PLEASE

[yanboq]

I have purchased the ultimate 64bit version. I have 35 GB that need to go to an empty FTP folder.
During the process of the first time sync, I deleted some files and moved others on my local machine. THOSE CHANGES ARE NOT RECOGNIZED by BestSync. I am forced to start the whole process over again.
QUESTION: What precautions should I take to ensure that I end up with a trustworthy situation?
Apparently I should not delete or move anything until the process has finished.
What about modifying a file? Can I modify a file during the first time synchronization?
Anything else I should be aware of before starting this (for me) 96 hour operation?
Thank you!

[RiseFly]

If you are to sync many files with FTP server, you can follow the below steps to prepare for the first time sync:
1. Use the "preview - synchronize time stamp only" menu to sync the timestamp once for the files that have same size but the timestamp is different.
2. Use "Preview - mirror ...." Menu to sync the folder once.
Then next synchronizations will detect file moving, deleting etc correctly.