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Autoballooning is ballooning every occurrence of components.
Solution
Select the parts list --> MB3 --> Settings --> select Parts List on the left
side of the dialog --> under the Callouts section on the right side of the
dialog, select None in the Reference Symbol Text dropdown --> Close.
Delete and recreate your Autoballoons.
Notes and References
Hardware/Software Configuration
Platform: na
OS: n/a
OS Version: n/a
Product: NX
Application: DRAFTING
Version: V1847
Function: TABLES
Ref: 001-7468665