I have moved from 135 while ago now. As everyone elses shop was indexed by search engines. Some old links had this
index.php?target=
?category_id=185&target
index.php?target=products
index.php?target=pages&page
Now in 2x all these parameters has changed but on entry with non available url I DO NOT GET 404 but instead home page is opened.
Now google has 300+ copies of my homepage. It is recognized it as duplicate content and punishment website is not found…
Check this out
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