Not always - this can be done by any qualified experienced rigger. We include instructions with every lineset purchased from JYRO (previously NZA) specifically for your rigger. Chances are the rigger you use will have re-lined many JYRO (previously NZA) canopies before.
If however you'd prefer it done at the factory, you can send your baby in for a reline and full inspection. The only downside is shipping costs and sending your canopy to New Zealand can mean the turn around time is likely to be longer than a local rigger.