: Many iron farm designs from 1.14 broke in 1.16 due to changes in how villagers "panic" to summon golems.
Is this a you downloaded, or a backup of your own server? 1-14_to_1-17.zip
: Your 1.14 Nether is likely a barren wasteland. Upgrading to 1.17 transforms the Nether into a vibrant dimension with biomes like Crimson Forests and Basalt Deltas. : Many iron farm designs from 1
: You gain everything from 1.15 (Bees), 1.16 (The Nether Update), and 1.17 (Amethyst, Copper, Goats). Upgrading to 1
Updating a world or server across these versions is a massive jump in game logic and world generation.
Are there included in the ZIP, or is it purely a vanilla world? Are you seeing any specific errors when you try to open it?
: 1.17 introduced the foundation for the "Caves & Cliffs" update. While the height limit didn't fully expand until 1.18, 1.17 added many blocks (Copper, Deepslate, Axolotls) that won't exist in your 1.14 chunks.