In short, no. When we re-yarn a pattern it is almost always to the same gauge and measurements as our original pattern. This means that even though your pattern may not list the yarn that you are working with in the project details, you will still follow the exact same instructions from cast on all the way to bind off.
However, sometimes we do like to re-yarn a pattern with a different weight of yarn or add another section to it, like sleeves or a cowl. These adaptations are always available for free, and should be used alongside the original pattern.
If you are unsure of what you will need for a project, be sure to look at the Basic Details on the project page on our website. All appropriate patterns and adaptations will be listed there. If you are still unsure of what you will need for a project, please do not hesitate to contact us.