Are you sure you did not outline the text first then add the dashed stroke?
I think this is the only way you could add this to text in InDesign now in Illustrator you can do this.

Not sure what the problem is.
You can just select the Text Box, go to menu OBJECT > TEXT FRAME OPTIONS and check the ignore text wrap at the bottom.

Pat
I am not sure what line-breaks you are having trouble with.
This GREP will find the whole line including the line break and remove it. The previous line is unaffected and the same for the following.

Find
.+Morita.+\r
Replace
NONE

Sounds like you have a Character format already set which is over riding your nested style.
Select the text and set the character format to NONE.

Your nested style works OK for me, one style through one TABm second style through one TAB (this will be the second tab) then a third style through one sentence.

Sorry I see you are working in Hebrew, my GREP will only work with Roman character set. It don’t have any Hebrew text so I can test this.
This will find all non space characters then the first space character. Try it and let me know if it works.
Try
Find
(^\S+)()
Replace
$1~m

Find
(^[\u]+)(\x{0020})
Replace
$1~m

This happens when you have a blank character set to that font.
This is ofter a blank text box, or an END OF STORY marker (# – when show invisibles is on), the Find command and GREP will not find these.
The FIND FONT under type will find and allow you to replace these.

Here is the text before and after the GREP listed above are applied.
Hope this does what you are after.

Formatting prices in InDesign