We are importing one JE with around 2k lines and we're getting this error: Script Execution Instruction Count Exceeded. The Run Server Scripts... preference is disabled. We haven't encountered this error on our previous imports of a JE with more than 2k lines.

@Luis you can use CloudExtend Excel for NetSuite to upload journal entries with up to 10,000 lines using "burst mode". Try if for free on the one causing your issue. It might just work out of the box (because it's imported via web services, not CSV), but if not CloudExtend team can help you define the context for your scripts so you don't get the errors.