Example:

 

 

Solution 1:
On target site go into Preferences General and set as on image:

Solution 2:

Use JSON encode / decode. 

1/ In export module select “Encode XML JSON”

2/ Save.

3 / Delete old export and create new export.

4/ In import module select “Decode JSON encoded chars” (for import ver. 3.1 and  above is this option set automaticaly)

5/ Save.

6 / Delete old import xml and  new import.