Migration from old server/version to new

Hello, I have some question about migrations of our Projeqtor instances on old servers to new ones
We are making new servers for the instances we have, which are as follow:

We tested this 2 times without errors on the (1.) beside what I will explain later
1. Projeqtor 11.1.3 -> 11.1.3
2. Projeqtor 9.5.5 -> 11.1.3
Debian 9 -> Debian 12 (We tried to upgrade the debian on the production machine but it borks projeqtor so we decided to just make a new one and migrate the data)
PHP 7.0.30 -> PHP 8.2
Mysql 15.1 stayed the same but
MariaDB 10.1.37 (readline 5.2)-> 10.11.4 (Editline Wrapper)

We did a Mysql dump from the old server to the new, and copied the the 4 Files directories (Attach, Config, Documents, Logs) in their new server counterpart to keep our attachments and other documents

We also copied the Images directory from Projeqtor main directory in /var/www/htm/projeqtor to have our custom images in headers, login page, etc

Everything works, even the LDP login BUT:
The Resources Profile photos did not follow and
I have to reinstall the plugins unless I copy the entire Plugins folder from /var/www/htm/projeqtor to the new /var/www/htm/projeqtor and I noticed that all my modifications using ScreenCustomization had not followed to the new server

Where should I look to have the settings from ScreenCustom back in the new server with all custom field back with the data they had intact ?
This is still in testing and we have our written procedure to get to this point without any problem

We also need to do this on a separate instance that had a problem in updating from 9.5.5 onwards (Convertion to UTF8_MB4 didn't work even when it was just a copy of the principal production projeqtor)

Can we use the same procedure and the data will adjust from 9.5.5 -> 11.1.3 ?

Or are we making a mistake and we need to copy the entire /var/www/htm/projeqtor to the new server on both instance and update the 9.5.5 one manually ?
What should we copy from old to new to optimally upgrade Projeqtor ?

Thank you

ps: If you need more information, do not hesitate

Thank you,
We dit this:
1.dump mysql db to the new server and import
2.copy projeqtor in var/html/projeqtor
3.copy filesprojeqtor (the attachments, logs, config, etc) and other in filesprojeqtor same location as old server

Everything worked perfectly (nearly)
we just have those 2 error messages (usually when Projeqtor disconnect user after a long time, or when we click disconnect)

2024-02-22 09:34:41.324 ***** ERROR ***** [V11.1.3] on file '/var/www/html/projeqtor/view/login.php' at line (38)
2024-02-22 09:34:41.324 ***** ERROR ***** [V11.1.3] cause = Cannot modify header information - headers already sent by (output started at /var/www/html/projeqtor/tool/projeqtor.php:46)
38      header ('Content-Type: text/html; charset=UTF-8');

and
2024-02-26 09:32:28.325 ***** ERROR ***** [V11.1.3] on file '/var/www/html/projeqtor/model/UserMain.php' at line (1889)
2024-02-22 09:34:41.324 ***** ERROR ***** [V11.1.3] cause = Cannot modify header information - headers already sent by (output started at /var/www/html/projeqtor/tool/projeqtor.php:46)
1889      $result=setcookie("projeqtor",pq_nvl($cookieHash),time()+3600*24*7,'/',pq_nvl($domain),$secure,$httpOnly);

What is the problem ? the first one is the usual one that appear when Projeqtor disconnect from extended idling (20-30min)
Those are really not problematic but if we can solve them, it would be easier
Tell me if you need anything else

Thank you

Hello,
Thanks for the answer to this

I'll look over this for the Main Projeqtor over the next few days
I have some other problems but on the Projeqtor Cab (instance separate for more sensitive things) : these  
As for the Migration for Projeqtor Cab 9.5.5 to a new server and a new version (for some reason, upgrading debian mess up Projeqtor)
It goes from :
Debian 9 to a 12.5
PHP 7.030 to a PHP 8.2
Mysql nothing really changes

However, we have several problems doing this the same way we did the Main Projeqtor
Mysqldump
Copy of filesprojeqtor (Log, config, attach, and document)
Copy of projeqtor in var/www/html

first, the dump of the mysql db has a problem when touching "historyarchive" table (biggest table of the entire projeqtor db)
it can read about 75% of the table but crashes and loses connection when nearing the end of this specific table (historyarchive) which seems to be the history of every action done followed by "save" in projeqtor from what little I understood of each entries

worked, bu not

makes the command crash

works, bigger like 250 000  or such, will crash

First attachment is what happens in projeqtor (log) when we did a dump and the dump didn't work
 

in mysql we had those
 
 

This is the log of mysql
 

and my colleague did those
* in the file /etc/mysql/mariadb.conf.d/50-custom-mariadb.cnf he added
 
* and also innodb_force_recovery = 4
* Deleted the files ib_logfile0 et ib_logfile1 et ibdata (/var/lib/mysql).
* launched the command  mysqlcheck -u root -p projeqtor

all without success

Doing a dump of the db without Historyarchive and doing a dump for it separately worked (all at once doesn't work)
we then tried to import both of those and then copy filesprojeqtor and projeqtor in their respective place

it worked, to a point.
We got to the login screen, but entering credentials did this  


The new server had a new projeqtor 11.1.3 installed as a default (always using same template as to not get tangled)
we copied a 9.5.5 over the files
first part of the log is when we just overwrote the /var/www/htm/projeqtor files
the last 3 errors (1 try and 2 F5) is when we deleted entirely projeqtor from /html/projeqtor and copied the old one from 9.5.5 server

From what we understood, the old projeqtor try to call PHP commands that are deprecated in PHP 8.2 that worked in PHP 7.030

Did updating Projeqtor to 10 and then 11 update its php calls ? And from all those tests, we could not update 9.5.5 because the Mysql crashed due to historyarchive
How would we go about purging the Historyarchive table in Mysql ?

Thanks