XML import to WordPress multisite

Hello,

I would like to import XML file from a single site (localhost WordPress version 4.5.3) to multisite (online WordPress version 4.6). Unfortunately, I found some problems. It can import only “Post”, but it cannot import the others, such as Media, Post translation, Term Translation, and Term language.

These are the things that I already worked.

1. .htaccess

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]

# add a trailing slash to /wp-admin
RewriteRule ^wp-admin$ wp-admin/ [R=301,L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
RewriteRule ^(wp-(content|admin|includes).*) $1 [L]
RewriteRule ^(.*\.php)$ wp/$1 [L]
RewriteRule . index.php [L]

</IfModule>

# END WordPress

2. I set php.ini as following (follow from Hostgator instruction)

upload_max_filesize = 64M
post_max_size = 64M
`
3. Change some XML file from localhost to http://subdomain/domain.com (for example)
and change the URL media link from /wp-content/uploads/2016/07/ to /wp-content/uploads/sites/2/2016/07/.

Could you please advise me what could I do next?

Regards,
Worapong