> For the complete documentation index, see [llms.txt](https://docs.b2copy.b2broker.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.b2copy.b2broker.com/admin-guide/configure-b2copy/prevent-syncing-of-collapsed-metatrader-trading-history-with-b2copy.md).
# Prevent syncing of collapsed MetaTrader trading history with B2COPY
The MetaTrader (MT) trading history can be shortened by collapsing the trading operations recorded before a certain date into a single balance operation showing the total PnL calculated against all the collapsed records, which are then removed.
When syncing MT trading history with the B2COPY investment platform, it is possible to exclude updates to the MT trading records that occurred before a specific date. By setting the date, you can also exclude the balance operation representing the collapsed MT trading records from syncing and still keep track of such records.
Set a date before which updates to MT trading records are not synced with B2COPY:
{% stepper %}
{% step %}
Go to **Investment Platform** and expand the required platform instance.
{% endstep %}
{% step %}
Expand **Settings**, and select **Synchronization**.
{% endstep %}
{% step %}
In the field named **Do not sync records before the date**, select the date.
If the date is not selected, the balance operation representing the collapsed MT trading records is synced with B2COPY and replaces the series of records that have been collapsed on MT.
{% endstep %}
{% step %}
In the field named **Set a mask of archiving for balance deal**, enter the search mask to find the comment added to the balance operation representing the collapsed MT trading history.
If during syncing, the balance operation is found using the search mask, it is excluded from syncing.
Settings > Synchronization
{% endstep %}
{% step %}
Click **Save** to apply the changes.
{% endstep %}
{% endstepper %}
---
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