Solution
The 'Array to Cluster' function in LabVIEW has a limitation where it can not change the data type for arrays larger than 256 elements.
However, it is still possible to convert large arrays into clusters using the 'Type Cast' function. In the snippet below, the data of the 300 element cluster is maintained as the data type is changed into a cluster.
Note: This image is a LabVIEW snippet, which includes LabVIEW code that you can reuse in your project. To use a snippet, right-click the image, save it to your computer, and drag the file onto your LabVIEW diagram.