How to Upgrade AvadaUpdating Avada
One significant modification was that the encoding system used in early Avada releases was changed to use the term "fusion" as a preferred name for all abbreviations to prevent conflict with other plug-ins that could use the same encoding syntax. Thus, the new system was able to use the same encoding system for all plug-ins.
In addition, the system of rows that previously assigned a Yes or No value to the last rows has been modified to include all rows in a "fusion_row" number. Similarly, inner colums are included in a "fusion_inner_row" speed dial. avada uses speed dials (now called "elements") to implement its many different styling choices, and many speed dials have become obsolete or change their naming over the years.
With every Avada you iterate, new items are added as well. More recent items must be set to "ON" in the Fusion Builder preferences. First, you will want to go through your own coding and search for brief coding interlaced in divides. The Fusion Builder wraps all div labels within the "fusion_text" shortcut during translation, possibly breaching the div label (i.e. the terminating label is no longer in the same container).
"Note HTML Comments" because the Merger builder reads small HTML files and ignores the HTML comment. Normally it encases the opening and exiting of HTML tokens in the shortcut "fusion_text" - similar to the above output. My suggestion is to remove the comment and then save old contents after converting using the new "Library Element" function of Merge Builder.