step by step

Hi,

im trying to move my site but with no result. i need step by step solution ??

what i have:
mysite.com – my current site
mysite.com/black – my new site

what i want to do:
mysite.com -> mysite.com/old
mysite.com/black -> mysite.com
——————-
what i did:
1. on mysite.com installed wp move
2. over softacolous installed new WP site on dir mysite.com/old (using same table prefix as in original database connected to root) and installed plugin WP move
3. on mysite.com and mysite.com/old under settings defined all fields and path /www/old/wp-plugin/wordpress-move/backup
4. create full backup (but my files are not stored in OLD, but in current folder, i dont know why)
5. i migrate them manualy over ftp from /www/wp-plugin/wordpress-move/backup -> /www/old/wp-plugin/wordpress-move/backup
6. open migrate tools on mypage.com/old and succesfuly import backup over WP move plugin

but NOTHING HAPPENS :/ over ftp i see that there are new files but i cannot load front page on mypage.com/old … keep getting 404 error

i have problems with this over 3 hours.. thank you very much for help in advance

https://www.ads-software.com/extend/plugins/wordpress-move/