Depending on the version of integrity you use there is a feature called "sandbox scope". The scope for a sandbox can either be set during sandbox creation or be changed for an already given sandbox.
You can use the following command to exclude de desired subproject and then the resync command will ignore this subproject
si configuresandbox --scope="!name:Archiv"
More info you can find on the PTC community
Command help
Create sanbox
H:\>si createsandbox -?
Usage: si createsandbox options... directory; options are:
--lineTerminator=[lf|crlf|native|cr] Line terminator to use in this san
dbox
--[no]populate Populate sandbox with members
-R Recurse into subsandboxes creation
--[no|confirm]recurse Recurse into subsandboxes creation
--scope=attribute:name[=value]
memberrevlabellike:<expression>
anyrevlabellike:<expression>
name:<expression>
path:<expression>
type:text|binary
any
subproject:<expression>
--[no]sparse Create sparse sandbox
--[no]openView Activate sandbox view after completing the command
--devpath=value The development path (to refer variant projects)
--[no]failOnAmbiguousProject Whether to abort when multiple projects co
rrespond to a flat project string.
-P value The name of the target project
--project=value The name of the target project
--projectRevision=value The project revision (to refer build projects)
--[no]awaitServer If server does not respond, keep trying
-? Shows the usage for a command
--[no]batch Control batch mode (no user interaction in batch mode)
--cwd=value Act as if command executed in specified directory
-F value Read the selection from a specified file
--forceConfirm=[yes|no] Specify an answer to all confirmation questions
-g User interaction should happen via the GUI
--gui User interaction should happen via the GUI
--hostname=value Hostname of server
-N Responds to all confirmations with "no"
--no Responds to all confirmations with "no"
--password=value Credentials (e.g., password) to login with
--port=value TCP/IP port number of server
--quiet Control status display
--selectionFile=value Read the selection from a specified file
--settingsUI=[gui|default] Control UI for command options
--status=[none|gui|gui.actions|default] Control status display
--usage Shows the usage for a command
--user=value Username to login to server with
-Y Responds to all confirmations with "yes"
--yes Responds to all confirmations with "yes"
Change sandbox configuration
H:\>si configuresandbox -?
Usage: si configuresandbox options... sandbox location...; options are:
--[no]computeChecksums
--lineTerminator=[lf|crlf|native|cr] Line terminator to use in this san
dbox
--scope=attribute:name[=value]
memberrevlabellike:<expression>
anyrevlabellike:<expression>
name:<expression>
path:<expression>
type:text|binary
any
subproject:<expression>
--[no]sparse Make the sandbox sparse
-? Shows the usage for a command
--[no]batch Control batch mode (no user interaction in batch mode)
--cwd=value Act as if command executed in specified directory
-F value Read the selection from a specified file
--forceConfirm=[yes|no] Specify an answer to all confirmation questions
-g User interaction should happen via the GUI
--gui User interaction should happen via the GUI
--hostname=value Hostname of server
-N Responds to all confirmations with "no"
--no Responds to all confirmations with "no"
--password=value Credentials (e.g., password) to login with
--port=value TCP/IP port number of server
--quiet Control status display
--selectionFile=value Read the selection from a specified file
--settingsUI=[gui|default] Control UI for command options
--status=[none|gui|gui.actions|default] Control status display
--usage Shows the usage for a command
--user=value Username to login to server with
-Y Responds to all confirmations with "yes"
--yes Responds to all confirmations with "yes"