If these assumptions are true:
1. The old partition table was overwritten with the same partition type, either MSDOS before and after, or GPT before and after.
2. There was a single partition spanning the array.
3. The partition was previously aligned to the default of 1 MiB.
Then take this action:
Create a new partition, SELECTING FILE SYSTEM "unformatted". Take the other defaults.
Using file system "unformatted" is critical. It tells GParted to only create entries in the partition table to define it's boundary and NOT write a file system. (Writing a file system would overwrite you data on your array).
If the above assumptions are not correct, please describe what you can about the partitions that use to exist on the array. Some idea of the number of partitions, their size and file system types.