1) In the old Perfect Browser, go to Bookmarks > Options > Export Bookmarks to HTML.
2) Tap Downloads / Files (blue arrow). Find 'Perfect Browser Bookmarks.html' from the list. Tap 'i' next to it.
3) Choose 'Open in...' and choose 'Copy to Perfect Web' from the App Icons in the first row (If it doesn't appear, add it using the More... button).
From Perfect Browser Pro: