how can I Upgrade Version 1.9.10 to 2.4.1
I believe the recommendation is to first upgrade to 1.9.19 and then to 2.0 and then to the most current release.
I have done this exact thing in my dev environment and we are posed to move it to production later this month.
Constance
Make that 1.9.19, then 2.2.7, then 2.4.1.