[GNC] How to Upgrade from GNU 4.11 to latest version (5.21)

[Adrien Monteleone]

Correct. You can go from 4.last to 5.current without needing to attempt 
5.0 in between.

There *might* have been some differences though with earlier versions to 
4.x. I think there was a mid-version migration done somewhere but I 
don't recall if it was the 2.6.x or 3.x series. (note, versioning 
changed with 3.x!) However, even then, I think the code remained and you 
weren't required to use a specific point release to successfully upgrade.


Regards,
Adrien

On 9/24/25 7:17 PM, Stan Brown (using GC 4.14) wrote:
> On 2025-09-24 17:04, Paul Kroitor wrote:
>> Well, perhaps, but assuming a dev put code in version X.00 to migrate an older structure used in version X-1.yy, who would ever remove that migration code in subsequent versions in the version X line?
>>
>> In other words, if 5.00 has migration code to convert from 4.x, surely that code is still in 5.12.
> 
> I think that must be true. Otherwise the standard advice, which is to
> upgrade to last sub-version of each major version (2.x, 3.x, 4.x, 5.x)
> would make no sense.