When i copy the below hyphenate word ("getting-") and paste into notepad, the hyphen are not captured (refer the screenshot). but, visibily hyphen present in pdf. I have checked various acrobat versions like Acrobat 8 to Acrobat DC. But, all are comes same results only. Please advise why this issue happened in pdf and how to solve this type of issue?. It would be helpful for our organisation.
It's not a hard hyphen, then. It's tagged as an "end of line" hyphen (the kind you use when splitting a word at the end of a line so it can continue in the next one), and is therefore removed by Acrobat when the text is copied.
Well, that depends. Hyphens in the middle of a phrase are certainly part of the text, like in "middle-aged", but hyphens that appear at the end of a line are (usually) not, although they can be, like in the example file above.
That's why it's important to encode them correctly.