I'm guessing here, but since the hymnal was meant to receive official recognition for church use, the year of the edition (1693) was supposedly more important than the printing year (I don't know what 1707 refers to; maybe a minor revision of the text). Sometimes the printing year and location is given on the last page instead of the first; have you checked that?
In the 1700's, Swedish law didn't recognize the concept of copyright, but printers instead operated under a system of exclusive printing privileges, which came with various restrictions (especially during the repressive regime 1774-1809). According to Bernhard Lundstedt: _Sveriges periodiska litteratur 1645-1812_ (The Periodical Literature of Sweden 1645-1812), 1895, Norberg acquired the printing rights to the paper _Götheborgska Nyheter_ in 1782 when he married M. C. Smitt, who in turn had inherited it from her brother Matthias Peter Smitt and their father Immanuel Smitt. In 1786 Norberg acquired the printing rights for _Götheborgs Allehanda_, and he kept printing both papers until his death in 1843.
The privilege granted to Norberg didn't give him permission to print news from abroad except those that had already been published in the official government periodical _Post- och Inrikes Tidningar_, a restriction which he violated a couple of times by publishing foreign news items from other sources in _Götheborgs Allehanda_, and in 1805 his privilege to print that paper was revoked and then re-issued a couple of weeks later.
Even though the first Freedom of Press Act was enacted in 1766, that freedom did not extend to religious texts, and I suppose those would include any hymnal editions. The only legal reason to print an old hymnal edition in the late 1700's would have been to meet a public demand for more copies of an already sanctioned text, thus the year of the printing may not have mattered much.